SIST EN 303 364-2 V1.1.1:2021

SLOVENSKI STANDARD
SIST EN 303 364-2 V1.1.1:2021
01-april-2021
Primarni nadzorni radar (PSR) - Harmonizirani standard za dostop do radijskega
spektra - 2. del: Senzorji PSR za nadzor zračnega prometa (ATC), ki delujejo v
frekvenčnem pasu od 2700 MHz do 3100 MHz (pas S)
Primary Surveillance Radar (PSR) - Harmonised Standard for access to radio spectrum -
Part 2: Air Traffic Control (ATC) PSR sensors operating in the frequency band 2 700 MHz
to 3 100 MHz (S band)
Ta slovenski standard je istoveten z: ETSI EN 303 364-2 V1.1.1 (2021-02)
ICS:
03.220.50 Zračni transport Air transport
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
SIST EN 303 364-2 V1.1.1:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 303 364-2 V1.1.1:2021

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SIST EN 303 364-2 V1.1.1:2021
ETSI EN 303 364-2 V1.1.1 (2021-02)






HARMONISED EUROPEAN STANDARD
Primary Surveillance Radar (PSR);
Harmonised Standard for access to radio spectrum;
Part 2: Air Traffic Control (ATC) PSR sensors operating in the
frequency band 2 700 MHz to 3 100 MHz (S band)

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SIST EN 303 364-2 V1.1.1:2021
 2 ETSI EN 303 364-2 V1.1.1 (2021-02)



Reference
DEN/ERM-TGAERO-31-2
Keywords
aeronautical, harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

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SIST EN 303 364-2 V1.1.1:2021
 3 ETSI EN 303 364-2 V1.1.1 (2021-02)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Technical requirements specifications . 10
4.1 Environmental profile . 10
4.2 Conformance requirements . 10
4.2.1 Transmitter requirements . 10
4.2.1.1 Maximum frequency deviation . 10
4.2.1.1.1 Definition. 10
4.2.1.1.2 Limits . 10
4.2.1.1.3 Conformance . 10
4.2.1.2 Transmitter power . 10
4.2.1.2.1 Definition. 10
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B bandwidth . 11
-40
4.2.1.3.1 Definition. 11
4.2.1.3.2 Limits . 11
4.2.1.3.3 Conformance . 11
4.2.1.4 Unwanted emissions. 11
4.2.1.4.1 General requirements . 11
4.2.1.4.2 Emissions in the Out-of-Band domain . 12
4.2.1.4.2.1 Definition . 12
4.2.1.4.2.2 Limits . 12
4.2.1.4.2.3 Confor ma nce . 12
4.2.1.4.3 Emissions in the spurious domain . 12
4.2.1.4.3.1 Definition . 12
4.2.1.4.3.2 Limits . 12
4.2.1.4.3.3 Confor ma nce . 13
4.2.1.4.4 Stand-by mode emissions . 13
4.2.1.4.4.1 Definition . 13
4.2.1.4.4.2 Limits . 13
4.2.1.4.4.3 Confor ma nce . 13
4.2.2 Receiver requirements . 13
4.2.2.1 General requirement . 13
4.2.2.2 Noise Figure . 13
4.2.2.2.1 Definition. 13
4.2.2.2.2 Limits . 14
4.2.2.2.3 Conformance . 14
4.2.2.3 Receiver Compression Level . 14
4.2.2.3.1 Definition. 14
4.2.2.3.2 Limits . 14
4.2.2.3.3 Conformance . 14
4.2.2.4 Receiver selectivity . 14
4.2.2.4.1 Definition. 14
4.2.2.4.2 Limit . 15
ETSI

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SIST EN 303 364-2 V1.1.1:2021
 4 ETSI EN 303 364-2 V1.1.1 (2021-02)
4.2.2.4.3 Conformance . 15
5 Testing for compliance with technical requirements . 16
5.1 General requirements . 16
5.2 Environmental conditions for testing . 16
5.2.1 Test conditions . 16
5.2.2 Normal temperature and humidity . 16
5.2.3 Normal test power supply . 16
5.3 Radio test suites . 16
5.3.1 Transmitter test specification . 16
5.3.1.1 Maximum frequency deviation . 16
5.3.1.2 Transmitter power . 16
5.3.1.3 Measured B bandwidth . 17
-40
5.3.1.4 Measured B bandwidth . 17
-20
5.3.1.5 Unwanted emissions. 17
5.3.1.5.1 Emissions in the Out-of-Band domain . 17
5.3.1.5.2 Emissions in the spurious domain . 18
5.3.1.5.3 Stand-by mode emissions . 18
5.3.2 Receiver test specification . 19
5.3.2.1 Noise Figure . 19
5.3.2.2 Receiver Compression Level . 19
5.3.2.3 Receiver selectivity . 20
5.3.2.3.1 General setup . 20
5.3.2.3.2 Disturbing Test Signals . 20
5.3.2.3.3 Measurement Procedure . 20
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 21
Annex B (normative): Calculation of the B bandw idth . 23
-40
Annex C (normative): Frequency deviation, transmitter power, B , B and Out-of-band
-40 -20
emissions measurement set-up . 25
Annex D (normative): Spurious and stand-by emissions measurement set-up . 26
Annex E (normative): Noise Figure measurement set-up . 28
Annex F (normative): Compression level and selectivity measurement set-up. 30
Annex G (informative): Maximum Measurement Uncertainty . 32
Annex H (informative): WR284/WG10 waveguide characteristics . 33
Annex I (informative): Checklist . 35
Annex J (informative): Bibliography . 37
History . 38


ETSI

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SIST EN 303 364-2 V1.1.1:2021
 5 ETSI EN 303 364-2 V1.1.1 (2021-02)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 2 of a multi-part deliverable covering ground based ATC Primary Surveillance Radar
(PSR), as identified below:
Part 1: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 1 215 MHz to 1 400 MHz
(L band)";
Part 2: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 2 700 MHz to 3 100 MHz
(S band)";
Part 3: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 8 500 MHz to 10 000 MHz
(X band)".

National transposition dates
Date of adoption of this EN: 18 February 2021
Date of latest announcement of this EN (doa): 31 May 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2021
Date of withdrawal of any conflicting National Standard (dow): 30 November 2022

ETSI

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SIST EN 303 364-2 V1.1.1:2021
 6 ETSI EN 303 364-2 V1.1.1 (2021-02)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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SIST EN 303 364-2 V1.1.1:2021
 7 ETSI EN 303 364-2 V1.1.1 (2021-02)
1 Scope
The present document specifies technical characteristics and methods of measurements for ground based monostatic
ATC primary surveillance radars with the following characteristics:
• operating in the 2 700 MHz to 3 100 MHz frequency range;
• transmitter output peak power up to 100 kW;
• the transceiver-antenna connection uses a hollow metallic rectangular waveguide of type WR284/WG10/R32
according to IEC 60153-2 [i.6] with a minimum length between the output of the power amplifier and the
input to the antenna of 2,886 m (20 times the wavelength of the waveguide cut-off frequency);
• the antenna rotates, is waveguide-based and passive;
• the transceiver output uses a RF circulator.
NOTE 1: Phased array ATC primary surveillance radars are not covered by the present document.
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[2] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
ETSI

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SIST EN 303 364-2 V1.1.1:2021
 8 ETSI EN 303 364-2 V1.1.1 (2021-02)
[i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.3] ITU Radio Regulations (2020).
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] ETSI EG 203 336 (V1.2.1) (2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.6] IEC 60153-2 (2016): "Hollow metallic waveguides - Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.7] Recommendation ITU-R SM.331-4 (07/1978): "Noise and sensitivity of receivers".
[i.8] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
auxiliary receiver: radar receiver not included in the transceiver
NOTE: For example an auxiliary receiver could be used for high beam antenna pattern.
dummy load: device connected to a waveguide or coaxial cable and matched to their impedance (typically 50 Ohms) to
absorb the RF energy propagating inside
equipment under test: device that is the subject of the specific test investigation being described
matched filter: receiver filter that matches the transmitted radar waveform, i.e. this is the filter that maximizes the
signal-to-noise ratio of the received pulse
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For Primary radars the necessary bandwidth BN is considered to be B-20 (20 dB bandwidth) as defined in
Recommendation ITU-R SM.1541-6 [i.4].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: Unless otherwise specified in an Recommendation ITU-R for the appropriate class of emission, the value
of (β/2) should be taken as 0,5 %.
operating frequencies: frequencies on which the radar is tuned to operate
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
ETSI

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SIST EN 303 364-2 V1.1.1:2021
 9 ETSI EN 303 364-2 V1.1.1 (2021-02)
peak envelope power: average power supplied to the antenna transmission line by a transmitter during one radio
frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulation [i.3].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time between the 50 % amplitude (voltage) points
pulse fall time: time taken for the trailing edge of the pulse to decrease from 90 % to 10 % of the maximum amplitude
(voltage)
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
receiver output: output of the digital matched filter function
system coupler: directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
unwanted emissions: spurious emissions and out-of-band emissions
NOTE: This definition is taken from ITU Radio Regulation [i.3].
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth below PEP of the spectrum of the transmitted waveform
-20
B -40 dB bandwidth below PEP of the spectrum of the transmitted waveform
-40
B Chirp bandwidth
C
B Necessary bandwidth
N
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
D Detectability Factor
no spur
f Operating Frequency
o
f Intermediate Frequency
IF
f Receiver operating Frequency
RF
f Image Frequency
image
k Boltzmann's constant
f Local Oscillator Frequency
LO
Pt Pulse power of transmission
RF Radio Frequency
S/N Signal-to-Noise ratio
t Time
T Pulse length (of individual chirp waveforms) in seconds
C
tp Pulse duration
tr Pulse rise time
tf Pulse fall time
T Temperature in Kelvin
0
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ATC Air Traffic Control
ETSI

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SIST EN 303 364-2 V1.1.1:2021
 10 ETSI EN 303 364-2 V1.1.1 (2021-02)
CW Continuou
...

Draft ETSI EN 303 364-2 V1.0.1 (2020-11)






HARMONISED EUROPEAN STANDARD
Primary Surveillance Radar (PSR);
Harmonised Standard for access to radio spectrum;
Part 2: Air Traffic Control (ATC) PSR sensors operating in the
frequency band 2 700 MHz to 3 100 MHz (S band)

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)



Reference
DEN/ERM-TGAERO-31-2
Keywords
aeronautical, harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Technical requirements specifications . 10
4.1 Environmental profile . 10
4.2 Conformance requirements . 10
4.2.1 Transmitter requirements . 10
4.2.1.1 Maximum frequency deviation . 10
4.2.1.1.1 Definition. 10
4.2.1.1.2 Limits . 10
4.2.1.1.3 Conformance . 10
4.2.1.2 Transmitter power . 10
4.2.1.2.1 Definition. 10
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B bandwidth . 11
-40
4.2.1.3.1 Definition. 11
4.2.1.3.2 Limits . 11
4.2.1.3.3 Conformance . 11
4.2.1.4 Unwanted emissions. 11
4.2.1.4.1 General requirements . 11
4.2.1.4.2 Emissions in the Out-of-Band domain . 12
4.2.1.4.2.1 Definition . 12
4.2.1.4.2.2 Limits . 12
4.2.1.4.2.3 Confor ma nce . 12
4.2.1.4.3 Emissions in the spurious domain . 12
4.2.1.4.3.1 Definition . 12
4.2.1.4.3.2 Limits . 12
4.2.1.4.3.3 Confor ma nce . 13
4.2.1.4.4 Stand-by mode emissions . 13
4.2.1.4.4.1 Definition . 13
4.2.1.4.4.2 Limits . 13
4.2.1.4.4.3 Confor ma nce . 13
4.2.2 Receiver requirements . 13
4.2.2.1 General requirement . 13
4.2.2.2 Noise Figure . 13
4.2.2.2.1 Definition. 13
4.2.2.2.2 Limits . 14
4.2.2.2.3 Conformance . 14
4.2.2.3 Receiver Compression Level . 14
4.2.2.3.1 Definition. 14
4.2.2.3.2 Limits . 14
4.2.2.3.3 Conformance . 14
4.2.2.4 Receiver selectivity . 14
4.2.2.4.1 Definition. 14
4.2.2.4.2 Limit . 15
ETSI

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4 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
4.2.2.4.3 Conformance . 15
5 Testing for compliance with technical requirements . 16
5.1 General requirements . 16
5.2 Environmental conditions for testing . 16
5.2.1 Test conditions . 16
5.2.2 Normal temperature and humidity . 16
5.2.3 Normal test power supply . 16
5.3 Radio test suites . 16
5.3.1 Transmitter test specification . 16
5.3.1.1 Maximum frequency deviation . 16
5.3.1.2 Transmitter power . 16
5.3.1.3 Measured B bandwidth . 17
-40
5.3.1.4 Measured B bandwidth . 17
-20
5.3.1.5 Unwanted emissions. 17
5.3.1.5.1 Emissions in the Out-of-Band domain . 17
5.3.1.5.2 Emissions in the spurious domain . 18
5.3.1.5.3 Stand-by mode emissions . 18
5.3.2 Receiver test specification . 19
5.3.2.1 Noise Figure . 19
5.3.2.2 Receiver Compression Level . 19
5.3.2.3 Receiver selectivity . 20
5.3.2.3.1 General setup . 20
5.3.2.3.2 Disturbing Test Signals . 20
5.3.2.3.3 Measurement Procedure . 20
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 21
Annex B (normative): Calculation of the B bandw idth . 23
-40
Annex C (normative): Frequency deviation, transmitter power, B , B and Out-of-band
-40 -20
emissions measurement set-up . 25
Annex D (normative): Spurious and stand-by emissions measurement set-up . 26
Annex E (normative): Noise Figure measurement set-up . 28
Annex F (normative): Compression level and selectivity measurement set-up. 30
Annex G (informative): Maximum Measurement Uncertainty . 32
Annex H (informative): WR284/WG10 waveguide characteristics . 33
Annex I (informative): Checklist . 35
Annex J (informative): Bibliography . 37
History . 38


ETSI

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5 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 2 of a multi-part deliverable covering ground based ATC Primary Surveillance Radars
(PSR), as identified below:
Part 1: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 1 215 MHz to 1 400 MHz
(L band)";
Part 2: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 2 700 MHz to 3 100 MHz
(S band)";
Part 3: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 8 500 MHz to 10 000 MHz
(X band)".
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

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6 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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7 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
1 Scope
The present document specifies technical characteristics and methods of measurements for ground based monostatic
ATC primary surveillance radars with the following characteristics:
• operating in the 2 700 MHz to 3 100 MHz frequency range;
• transmitter output peak power up to 100 kW;
• the transceiver-antenna connection uses a hollow metallic rectangular waveguide of type WR284/WG10/R32
according to IEC 60153-2 [i.6] with a minimum length between the output of the power amplifier and the
input to the antenna of 2,886 m (20 times the wavelength of the waveguide cut-off frequency);
• the antenna rotates, is waveguide-based and passive;
• the transceiver output uses a RF circulator.
NOTE 1: Phased array ATC primary surveillance radars are not covered by the present document.
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[2] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
ETSI

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8 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
[i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.3] ITU Radio Regulations (2020).
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] ETSI EG 203 336 (V1.2.1) (2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.6] IEC 60153-2 (2016): "Hollow metallic waveguides - Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.7] Recommendation ITU-R SM.331-4 (07/1978): "Noise and sensitivity of receivers".
[i.8] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
auxiliary receiver: radar receiver not included in the transceiver
NOTE: For example an auxiliary receiver could be used for high beam antenna pattern.
dummy load: device connected to a waveguide or coaxial cable and matched to their impedance (typically 50 Ohms) to
absorb the RF energy propagating inside
equipment under test: device that is the subject of the specific test investigation being described
matched filter: receiver filter that matches the transmitted radar waveform, i.e. this is the filter that maximizes the
signal-to-noise ratio of the received pulse
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For Primary radars the necessary bandwidth BN is considered to be B-20 (20 dB bandwidth) as defined in
Recommendation ITU-R SM.1541-6 [i.4].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: Unless otherwise specified in an Recommendation ITU-R for the appropriate class of emission, the value
of ( β/2) should be taken as 0,5 %.
operating frequencies: frequencies on which the radar is tuned to operate
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
ETSI

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9 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
peak envelope power: average power supplied to the antenna transmission line by a transmitter during one radio
frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulation [i.3].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time between the 50 % amplitude (voltage) points
pulse fall time: time taken for the trailing edge of the pulse to decrease from 90 % to 10 % of the maximum amplitude
(voltage)
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
receiver output: output of the digital matched filter function
system coupler: directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
unwanted emissions: spurious emissions and out-of-band emissions
NOTE: This definition is taken from ITU Radio Regulation [i.3].
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth below PEP of the spectrum of the transmitted waveform
-20
B -40 dB bandwidth below PEP of the spectrum of the transmitted waveform
-40
B Chirp bandwidth
C
B Necessary bandwidth
N
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
D Detectability Factor
no spur
f Operating Frequency
o
f Intermediate Frequency
IF
f Receiver operating Frequency
RF
f Image Frequency
image
k Boltzmann's constant
f Local Oscillator Frequency
LO
Pt Pulse power of transmission
RF Radio Frequency
S/N Signal-to-Noise ratio
t Time
T Pulse length (of individual chirp waveforms) in seconds
C
tp Pulse duration
tr Pulse rise time
tf Pulse fall time
T Temperature in Kelvin
0
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ATC Air Traffic Control
ETSI

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10 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
CW Continuous Wave
EIA Electronic Industries Alliance
IEC International Electrotechnical Commission
IF Intermediate Frequency
ITU International Telecommunication Union
na not available
NF Noise Factor
OoB Out-of-Band
PEP Peak Envelope Power
ppm parts per million
PSR Primary Surveillance Radar
RCSC Radio Components Standardization Committee
RF Radio Frequency
WG Waveguide
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use, but as a minimum, shall be that specified in the test
conditions contained in the present document. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the operational environmental profile
defined by its intended use.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Maximum frequency deviation
4.2.1.1.1 Definition
The maximum frequency deviation is the maximum allowed departure from t
...

SLOVENSKI STANDARD
oSIST prEN 303 364-2 V1.0.1:2021
01-januar-2021
Primarni nadzorni radar (PSR) - Harmonizirani standard za dostop do radijskega
spektra - 2. del: Senzorji PSR za nadzor zračnega prometa (ATC), ki delujejo v
frekvenčnem pasu od 2700 MHz do 3100 MHz (pas S)
Primary Surveillance Radar (PSR) - Harmonised Standard for access to radio spectrum -
Part 2: Air Traffic Control (ATC) PSR sensors operating in the frequency band 2 700
MHz to 3 100 MHz (S band)
Ta slovenski standard je istoveten z: ETSI EN 303 364-2 V1.0.1 (2020-11)
ICS:
03.220.50 Zračni transport Air transport
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
oSIST prEN 303 364-2 V1.0.1:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 303 364-2 V1.0.1:2021

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oSIST prEN 303 364-2 V1.0.1:2021
Draft ETSI EN 303 364-2 V1.0.1 (2020-11)






HARMONISED EUROPEAN STANDARD
Primary Surveillance Radar (PSR);
Harmonised Standard for access to radio spectrum;
Part 2: Air Traffic Control (ATC) PSR sensors operating in the
frequency band 2 700 MHz to 3 100 MHz (S band)

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oSIST prEN 303 364-2 V1.0.1:2021
 2 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)



Reference
DEN/ERM-TGAERO-31-2
Keywords
aeronautical, harmonised standard, radar, radio
ETSI
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®
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ETSI

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 3 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Technical requirements specifications . 10
4.1 Environmental profile . 10
4.2 Conformance requirements . 10
4.2.1 Transmitter requirements . 10
4.2.1.1 Maximum frequency deviation . 10
4.2.1.1.1 Definition. 10
4.2.1.1.2 Limits . 10
4.2.1.1.3 Conformance . 10
4.2.1.2 Transmitter power . 10
4.2.1.2.1 Definition. 10
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B bandwidth . 11
-40
4.2.1.3.1 Definition. 11
4.2.1.3.2 Limits . 11
4.2.1.3.3 Conformance . 11
4.2.1.4 Unwanted emissions. 11
4.2.1.4.1 General requirements . 11
4.2.1.4.2 Emissions in the Out-of-Band domain . 12
4.2.1.4.2.1 Definition . 12
4.2.1.4.2.2 Limits . 12
4.2.1.4.2.3 Confor ma nce . 12
4.2.1.4.3 Emissions in the spurious domain . 12
4.2.1.4.3.1 Definition . 12
4.2.1.4.3.2 Limits . 12
4.2.1.4.3.3 Confor ma nce . 13
4.2.1.4.4 Stand-by mode emissions . 13
4.2.1.4.4.1 Definition . 13
4.2.1.4.4.2 Limits . 13
4.2.1.4.4.3 Confor ma nce . 13
4.2.2 Receiver requirements . 13
4.2.2.1 General requirement . 13
4.2.2.2 Noise Figure . 13
4.2.2.2.1 Definition. 13
4.2.2.2.2 Limits . 14
4.2.2.2.3 Conformance . 14
4.2.2.3 Receiver Compression Level . 14
4.2.2.3.1 Definition. 14
4.2.2.3.2 Limits . 14
4.2.2.3.3 Conformance . 14
4.2.2.4 Receiver selectivity . 14
4.2.2.4.1 Definition. 14
4.2.2.4.2 Limit . 15
ETSI

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oSIST prEN 303 364-2 V1.0.1:2021
 4 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
4.2.2.4.3 Conformance . 15
5 Testing for compliance with technical requirements . 16
5.1 General requirements . 16
5.2 Environmental conditions for testing . 16
5.2.1 Test conditions . 16
5.2.2 Normal temperature and humidity . 16
5.2.3 Normal test power supply . 16
5.3 Radio test suites . 16
5.3.1 Transmitter test specification . 16
5.3.1.1 Maximum frequency deviation . 16
5.3.1.2 Transmitter power . 16
5.3.1.3 Measured B bandwidth . 17
-40
5.3.1.4 Measured B bandwidth . 17
-20
5.3.1.5 Unwanted emissions. 17
5.3.1.5.1 Emissions in the Out-of-Band domain . 17
5.3.1.5.2 Emissions in the spurious domain . 18
5.3.1.5.3 Stand-by mode emissions . 18
5.3.2 Receiver test specification . 19
5.3.2.1 Noise Figure . 19
5.3.2.2 Receiver Compression Level . 19
5.3.2.3 Receiver selectivity . 20
5.3.2.3.1 General setup . 20
5.3.2.3.2 Disturbing Test Signals . 20
5.3.2.3.3 Measurement Procedure . 20
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 21
Annex B (normative): Calculation of the B bandw idth . 23
-40
Annex C (normative): Frequency deviation, transmitter power, B , B and Out-of-band
-40 -20
emissions measurement set-up . 25
Annex D (normative): Spurious and stand-by emissions measurement set-up . 26
Annex E (normative): Noise Figure measurement set-up . 28
Annex F (normative): Compression level and selectivity measurement set-up. 30
Annex G (informative): Maximum Measurement Uncertainty . 32
Annex H (informative): WR284/WG10 waveguide characteristics . 33
Annex I (informative): Checklist . 35
Annex J (informative): Bibliography . 37
History . 38


ETSI

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 5 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 2 of a multi-part deliverable covering ground based ATC Primary Surveillance Radars
(PSR), as identified below:
Part 1: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 1 215 MHz to 1 400 MHz
(L band)";
Part 2: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 2 700 MHz to 3 100 MHz
(S band)";
Part 3: "Air Traffic Control (ATC) PSR sensors operating in the frequency band 8 500 MHz to 10 000 MHz
(X band)".
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

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oSIST prEN 303 364-2 V1.0.1:2021
 6 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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oSIST prEN 303 364-2 V1.0.1:2021
 7 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
1 Scope
The present document specifies technical characteristics and methods of measurements for ground based monostatic
ATC primary surveillance radars with the following characteristics:
• operating in the 2 700 MHz to 3 100 MHz frequency range;
• transmitter output peak power up to 100 kW;
• the transceiver-antenna connection uses a hollow metallic rectangular waveguide of type WR284/WG10/R32
according to IEC 60153-2 [i.6] with a minimum length between the output of the power amplifier and the
input to the antenna of 2,886 m (20 times the wavelength of the waveguide cut-off frequency);
• the antenna rotates, is waveguide-based and passive;
• the transceiver output uses a RF circulator.
NOTE 1: Phased array ATC primary surveillance radars are not covered by the present document.
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[2] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
ETSI

---------------------- Page: 9 ----------------------
oSIST prEN 303 364-2 V1.0.1:2021
 8 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
[i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.3] ITU Radio Regulations (2020).
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] ETSI EG 203 336 (V1.2.1) (2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.6] IEC 60153-2 (2016): "Hollow metallic waveguides - Part 2: Relevant specifications for ordinary
rectangular waveguides".
[i.7] Recommendation ITU-R SM.331-4 (07/1978): "Noise and sensitivity of receivers".
[i.8] Recommendation ITU-R SM.332-4 (07/1978): "Selectivity of receivers".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
auxiliary receiver: radar receiver not included in the transceiver
NOTE: For example an auxiliary receiver could be used for high beam antenna pattern.
dummy load: device connected to a waveguide or coaxial cable and matched to their impedance (typically 50 Ohms) to
absorb the RF energy propagating inside
equipment under test: device that is the subject of the specific test investigation being described
matched filter: receiver filter that matches the transmitted radar waveform, i.e. this is the filter that maximizes the
signal-to-noise ratio of the received pulse
necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at
the rate and with the quality required under specified conditions for a given class of emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: For Primary radars the necessary bandwidth BN is considered to be B-20 (20 dB bandwidth) as defined in
Recommendation ITU-R SM.1541-6 [i.4].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: This definition is taken from ITU Radio Regulation [i.3].
NOTE 2: Unless otherwise specified in an Recommendation ITU-R for the appropriate class of emission, the value
of (β/2) should be taken as 0,5 %.
operating frequencies: frequencies on which the radar is tuned to operate
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
ETSI

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oSIST prEN 303 364-2 V1.0.1:2021
 9 Draft ETSI EN 303 364-2 V1.0.1 (2020-11)
peak envelope power: average power supplied to the antenna transmission line by a transmitter during one radio
frequency cycle at the crest of the modulation envelope taken under normal operating conditions
NOTE: This definition is taken from ITU Radio Regulation [i.3].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time between the 50 % amplitude (voltage) points
pulse fall time: time taken for the trailing edge of the pulse to decrease from 90 % to 10 % of the maximum amplitude
(voltage)
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
receiver output: output of the digital matched filter function
system coupler: directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
unwanted emissions: spurious emissions and out-of-band emissions
NOTE: This definition is taken from ITU Radio Regulation [i.3].
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -20 dB bandwidth below PEP of the spectrum of the transmitted waveform
-20
B -40 dB bandwidth below PEP of the spectrum of the transmitted waveform
-40
B Chirp bandwidth
C
B Necessary bandwidth
N
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
D Detectability Factor
no spur
f Operating Frequency
o
f Intermediate Frequency
IF
f Receiver operating Frequency
RF
f Image Frequency
image
k Boltzmann's constant
f Local Oscillator Frequency
LO
Pt Pulse power of transmission
RF Radio Frequency
S/N Signal-to-Noise ratio
t Time
T Pulse length (of individual chirp waveforms) in seconds
C
tp Pulse duration
tr Pulse rise time
tf Pulse fall time
T Temperature in Kelvin
0
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alte
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