SIST EN 303 135 V2.1.1:2016

ETSI EN 303 135 V2.1.1 (2016-06)






HARMONISED EUROPEAN STANDARD
Electromagnetic compatibility and
Radio spectrum Matters (ERM);
Coastal Surveillance, Vessel Traffic Services and
Harbour Radars (CS/VTS/HR);
Harmonised Standard covering the essential requirements
of article 3.2 of the Directive 2014/53/EU

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2 ETSI EN 303 135 V2.1.1 (2016-06)



Reference
REN/ERM-TG26-147
Keywords
maritime, radar, regulation
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 only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
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.

© European Telecommunications Standards Institute 2016.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI EN 303 135 V2.1.1 (2016-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Executive Summary . 5
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
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 Operating frequency . 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 Out-of-band emissions . 11
4.2.1.3.1 Definition. 11
4.2.1.3.2 Limits . 13
4.2.1.3.3 Conformance . 14
4.2.1.4 Spurious emissions . 14
4.2.1.4.1 Definition. 14
4.2.1.4.2 Limits . 15
4.2.1.4.3 Conformance . 15
4.2.2 Receiver requirements . 15
4.2.2.1 Receiver Selectivity . 15
4.2.2.1.1 Definition. 15
4.2.2.1.2 Limit . 15
4.2.2.1.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.0 General requirements for testing . 16
5.1 Environmental conditions for testing . 16
5.1.1 Introduction. 16
5.1.2 Standard operation mode for testing . 16
5.1.3 Normal temperature and humidity . 16
5.1.4 Normal test power supply . 16
5.2 Interpretation of the measurements results . 17
5.3 Radio test suites . 17
5.3.1 Transmitter test specification . 17
5.3.1.1 Operating frequency . 17
5.3.1.2 Transmitter power . 18
5.3.1.3 Out-of-Band-emissions . 18
5.3.1.4 Spurious emissions . 20
ETSI

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4 ETSI EN 303 135 V2.1.1 (2016-06)
5.3.2 Receiver test specification . 21
5.3.2.1 Receiver Selectivity . 21
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 22
Annex B (normative): Transmission power and unwanted emissions of radar systems with
indirect methods . 23
Annex C (informative): Bibliography . 24
History . 25

ETSI

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5 ETSI EN 303 135 V2.1.1 (2016-06)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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.
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.12] 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.

National transposition dates
Date of adoption of this EN: 6 June 2016
Date of latest announcement of this EN (doa): 30 September 2016
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2017
Date of withdrawal of any conflicting National Standard (dow): 31 March 2018

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.
Executive Summary
The present document covers the essential requirements for efficient use of radio spectrum by Coastal Surveillance,
Vessel Traffic Services and Harbour Radars (CS/VTS/HR) in the bands between 8 500 MHz to 10 000 MHz using
pulsed signals and a transmitting power up to 100 kW. The present document includes necessary changes due to
adaption to the new Radio Equipment Directive [i.1].
ETSI

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6 ETSI EN 303 135 V2.1.1 (2016-06)
Introduction
The present document intends to present a harmonized way of proving compliance to the essential requirements of the
RE Directive [i.1] for important types of radar like Coastal Surveillance (CS), Vessel Traffic Services (VTS) and
possibly harbour radars.
The emission limits implemented arise from ECC/Recommendation (02)05 [i.3] and ERC/Recommendation
74-01 [i.4].
The test methods used arise from Recommendation ITU-R M.1177-4 [2] and Recommendation ITU-R SM.1541-5 [1].
NOTE: The present document is closely related to ETSI EN 303 213-6-1 [i.11] which covers essential
requirements for radars used in airport SMGCS systems, but which use largely the same type of radar
technology.
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the RE Directive [i.1]. The modular
structure is shown in ETSI EG 201 399 [i.7].

ETSI

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7 ETSI EN 303 135 V2.1.1 (2016-06)
1 Scope
The present document applies to X-band radar sensors intended for use in Vessel Traffic Services (VTS), Coastal
Surveillance (CS) or Harbour Radar Systems with the following characteristics:
• Utilizing modulated or unmodulated pulses.
• Transmitter Peak Envelope Power up to 100 kW.
• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.
• The antenna is rotating, waveguide- based and passive.
• At the transceiver output an RF-circulator is used.
NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based, the frequency range for
measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency
range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100
Waveguide as defined by IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in
ERC/Recommendation 74-01 [i.4]. Other types of waveguide may be used by the same principles to
obtain complete measurement coverage of the frequency range of the output flange of the equipment
under test.
NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 3: According to article 5 of the ITU Radio Regulations [i.5] there are a number of bands between 8,5 GHz
and 10 GHz that are allocated to Radiolocation service. There are national deviations to the detailed band
usages, but the basic spectrum usage regulation is the same.
Table 1: Radiolocation service frequency bands [GHz]
8 500 - 8 550
8 550 - 8 650
8 650 - 8 750
8 750 - 8 850
8 850 - 9 000
9 000 - 9 200
9 200 - 9 300
9 300 - 9 500
9 500 - 9 800
9 800 - 9 900
9 900 - 10 000

The present document contains requirements to demonstrate that ".radio equipment shall be so constructed that it both
effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1].
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Radio Equipment Directive [i.1] may apply to equipment within the scope of the
present document.
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
reference document (including any amendments) applies.
ETSI

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8 ETSI EN 303 135 V2.1.1 (2016-06)
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] Recommendation ITU-R SM.1541-5 (08-2013): "Unwanted emissions in the out-of-band domain".
[2] 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
reference 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.
[i.2] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[i.4] ERC/Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".
[i.5] ITU Radio Regulations (2012).
[i.6] Void.
[i.7] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to
the production of Harmonized Standards for application under the Radio & Telecommunication
Terminal Equipment Directive 1999/5/EC (R&TTE) and a first guide on the impact of the Radio
Equipment Directive 2014/53/EU (RED) on Harmonized Standards".
[i.8] Void.
[i.9] ETSI TR 100 028 (all parts) (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio
spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment
characteristics".
[i.10] ETSI TR 100 028-2 (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics;
Part 2".
[i.11] ETSI EN 303 213-6-1: "Advanced Surface Movement Guidance and Control System (A-SMGCS);
Part 6: Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU for deployed surface movement radar sensors; Sub-part 1: X-band sensors using
pulsed signals and transmitting power up to 100 kW".
[i.12] 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.
ETSI

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9 ETSI EN 303 135 V2.1.1 (2016-06)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
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: This definition is taken from ITU Radio Regulations [i.5].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
β/2 of the total mean power of a given emission
mean powers emitted are each equal to a specified percentage
NOTE 1: This definition is taken from ITU Radio Regulations [i.5].
NOTE 2: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
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 Regulations [i.5].
pulse duration: time between the 50 % amplitude (voltage) points
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB bandwidth

-40
Chirp bandwidth
B
C
B Necessary bandwidth
N
B Maximum range over which the carrier frequency is shifted
S
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
P Pulse power of transmission
t
t Time
t Pulse duration
p
t Pulse rise time
r
t Pulse fall time
f
τ Pulse length including rise & fall times
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
CS Coastal Surveillance
FM Frequency Modulation
HR Harbor Radar
LNA Low Noise Amplifier
OoB Out-of-Band
ETSI

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10 ETSI EN 303 135 V2.1.1 (2016-06)
PEP Peak Envelope Power
RED Radio Equipment Directive
RF Radio Frequency
VTS Vessel Traffic Services
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 declared by the supplier, 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 declared operational environmental profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Operating frequency
4.2.1.1.1 Definition
The transmitter of a pulsed radar produces microwave pulses, which cause a broad frequency spectrum, depending on
the pulse duration.
In the present document the operating frequency is considered to be the frequency of the microwave emission during
the transmitting pulse and is represented by the spectral line of highest amplitude.
NOTE: It is only practicable to indicate an operating frequency for radars with unmodulated pulses. In this case a
limit for the frequency tolerance is specified. For radars with modulated pulses such a limit is not
applicable. In any case the occupied bandwidth is completely contained in the allocated frequency
band(s).
4.2.1.1.2 Limits
The frequency tolerance for a radar applying unmodulated pulses shall be ±30 MHz.
For all radar types covered by the present document the occupied bandwidth of the signal shall be contained completely
within the allocated band in use (e.g. 9 300 MHz to 9 500 MHz) in all operating modes.
4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.3.1.1.
4.2.1.2 Transmitter power
4.2.1.2.1 Definition
In the present document the transmitter power of a pulse radar is considered to be the peak value of the transmitter pulse
power during the transmission pulse (PEP).
If the transmitter power varies over the azimuth, the highest PEP over at least one rotation period has to be used.
The transmitter power shall be referenced with respect to the output port of the radar transmitter.
ETSI

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11 ETSI EN 303 135 V2.1.1 (2016-06)
If the transmitter power can be varied according to azimuth, the highest PEP value measured during a period equal to at
least one rotation period shall be used.
4.2.1.2.2 Limits
The transmitter power shall be as specified by the manufacturer with an accuracy of at least ±2 dB. The peak power
value shall not exceed 100 kW (50 dBW).
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.4.1.2.
4.2.1.3 Out-of-band emissions
4.2.1.3.1 Definition
An important parameter of the Out-of-Band (OoB) emissions mask of the radar is the -40 dB bandwidth. Annex 8 of
Recommendation ITU-R SM.1541-5 [1] specifies the -40 dB bandwidth specified for various types of waveforms
(e.g. pulsed radar signals). With the following assumptions which apply to most airport surface movement radars these
specifications can be further simplified:
• the radar is operating in a band within the limits 8 500 MHz to 10 000 MHz;
• the pulse power is below 100 kW;
• the pulse rise time t is greater than 0,0094 t, where t is the pulse duration.
r
With the aforementioned assumptions the -40 dB bandwidth (B ) for primary non-FM pulse radars can be determined
-40
as follows:
7.6
B =
−40
t ×t
r
Where:
• t is the pulse duration;
• t is the rise time in the case of a trapezoidal pulse.
r
NOTE: For typical values of a pulse duration of t = 50 ns and a rise time of t = 10 ns the formula above yields
r
a -40 dB bandwidth value of 340 MHz.
For radars with multiple pulse waveforms, the B bandwidth should be calculated for each individual pulse type and
-40
the maximum B bandwidth obtained shall be used to establish the shape of the emission mask.
-40
For radars with a highly asymmetrical spectrum, the B dB bandwidth can be offset from the frequency of maximum
-40
emission level, but the necessary bandwidth, B and preferably the overall occupied bandwidth should be contained
N
completely within the allocated band as stipulated in section 4 of Annex 8 of Recommendation ITU-R SM.1541-5 [1].
The application of this rule is illustrated in Figure 1.
ETSI

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12 ETSI EN 303 135 V2.1.1 (2016-06)

Figure 1: Application of the offset-rule for the Out-of-Band emission limit mask
For FM pulsed radars the B can be calculated as follows:
-40
0.53
{ ()[]()()}
B = 1.5⋅ B + π ⋅[]ln B ⋅τ ⋅ Min B , B , B + Max B , B , B + B
−40 C C rise fall rise& fall rise fall rise& fall S
where
1
B =
rise
τ ⋅ t
r
1
B =
fall
τ ⋅t
f
1
B =
rise& fall
3
τ ⋅ t ⋅t
f f

Where:
B is the -40 dB bandwidth in Hz;
-40
B is the bandwidth of the frequency deviation (total frequency shift during the pulse generation);
C
B is the maximum range over which the carrier frequency will be shifted, B equals zero for non-frequency
S S
hopping cases. It is zero in case of a single carrier frequency;
τ is the pulse length including rise & fall times;
t is the risetime in seconds;
r
t is the falltime in seconds.
f
For systems with multiple carriers, the OoB domain should start at the edges of the total assigned bandwidth. This
means that the effective B is from the lower end of the calculated B of the lowest ra
...

SLOVENSKI STANDARD
oSIST prEN 303 135 V2.1.0:2016
01-maj-2016
(OHNWURPDJQHWQD]GUXåOMLYRVWLQ]DGHYHY]YH]L]UDGLMVNLPVSHNWURP(50
2EDOQLQDG]RUVLVWHPL]DQDG]RUSORYEHLQSULVWDQLãNLUDGDUML&6976+5
+DUPRQL]LUDQL(1NL]DMHPDELVWYHQH]DKWHYHþOHQDGLUHNWLYH(8
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Coastal Surveillance,
Vessel Traffic Services and Harbour Radars (CS/VTS/HR) - Harmonized EN covering
the essential requirements of article 3.2 of the Directive 2014/53/EU
Ta slovenski standard je istoveten z: EN 303 135
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
oSIST prEN 303 135 V2.1.0:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 303 135 V2.1.0:2016

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oSIST prEN 303 135 V2.1.0:2016
Draft ETSI EN 303 135 V2.1.0 (2016-03)






HARMONISED EUROPEAN STANDARD
Electromagnetic compatibility and
Radio spectrum Matters (ERM);
Coastal Surveillance,
Vessel Traffic Services and Harbour Radars (CS/VTS/HR);
Harmonized EN covering the essential requirements
of article 3.2 of the Directive 2014/53/EU

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oSIST prEN 303 135 V2.1.0:2016
 2 Draft ETSI EN 303 135 V2.1.0 (2016-03)



Reference
REN/ERM-TG26-147
Keywords
maritime, radar, regulation
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 only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
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.

© European Telecommunications Standards Institute 2016.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 4 ----------------------
oSIST prEN 303 135 V2.1.0:2016
 3 Draft ETSI EN 303 135 V2.1.0 (2016-03)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Executive Summary . 5
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
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 Operating frequency . 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 . 10
4.2.1.2.3 Conformance . 11
4.2.1.3 Out-of-band emissions . 11
4.2.1.3.1 Definition. 11
4.2.1.3.2 Limits . 13
4.2.1.3.3 Conformance . 14
4.2.1.4 Spurious emissions . 14
4.2.1.4.1 Definition. 14
4.2.1.4.2 Limits . 15
4.2.1.4.3 Conformance . 15
4.2.2 Receiver requirements . 15
4.2.2.1 Receiver Selectivity . 15
4.2.2.1.1 Definition. 15
4.2.2.1.2 Limit . 16
4.2.2.1.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.0 General requirements for testing . 16
5.1 Environmental conditions for testing . 16
5.1.1 Introduction. 16
5.1.2 Standard operation mode for testing . 16
5.1.3 Normal temperature and humidity . 16
5.1.4 Normal test power supply . 17
5.2 Interpretation of the measurements results . 17
5.3 Radio test suites . 17
5.3.1 Transmitter test specification . 17
5.3.1.1 Operating frequency . 17
5.3.1.2 Transmitter power . 18
5.3.1.3 Out-of-Band-emissions . 18
5.3.1.4 Spurious emissions . 20
5.3.2 Receiver test specification . 21
ETSI

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oSIST prEN 303 135 V2.1.0:2016
 4 Draft ETSI EN 303 135 V2.1.0 (2016-03)
5.3.2.1 Receiver Selectivity . 21
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 22
Annex B (normative): Transmission power and unwanted emissions of radar systems with
indirect methods . 23
Annex C (informative): Bibliography . 24
History . 25


ETSI

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oSIST prEN 303 135 V2.1.0:2016
 5 Draft ETSI EN 303 135 V2.1.0 (2016-03)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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.
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.12] 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.

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

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.
Executive Summary
The present document covers the essential requirements for efficient use of radio spectrum by Coastal Surveillance,
Vessel Traffic Services and Harbour Radars (CS/VTS/HR) in the bands between 8 500 MHz to 10 000 MHz using
pulsed signals and a transmitting power up to 100 kW. The present document includes necessary changes due to
adaption to the new Radio Equipment Directive [i.1].
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Introduction
The present document intends to present a harmonized way of proving compliance to the essential requirements of the
RE Directive [i.1] for important types of radar like Coastal Surveillance (CS), Vessel Traffic Services (VTS) and
possibly harbour radars.
The emission limits implemented arise from ECC/Recommendation (02)05 [i.3] and ERC/Recommendation
74-01 [i.4].
The test methods used arise from Recommendation ITU-R M.1177-4 [2] and Recommendation ITU-R SM.1541-5 [1].
NOTE: The present document is closely related to ETSI EN 303 213-6-1 [i.11] which covers essential
requirements for radars used in airport SMGCS systems, but which use largely the same type of radar
technology.
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the RE Directive [i.1]. The modular
structure is shown in ETSI EG 201 399 [i.7].

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1 Scope
The present document applies to X-band radar sensors intended for use in Vessel Traffic Services (VTS), Coastal
Surveillance (CS) or Harbour Radar Systems with the following characteristics:
• Utilizing modulated or unmodulated pulses.
• Transmitter Peak Envelope Power up to 100 kW.
• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.
• The antenna is rotating, waveguide- based and passive.
• At the transceiver output an RF-circulator is used.
NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based, the frequency range for
measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency
range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100
Waveguide as defined by IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in
ERC/Recommendation 74-01 [i.4]. Other types of waveguide may be used by the same principles to
obtain complete measurement coverage of the frequency range of the output flange of the equipment
under test.
NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 3: According to article 5 of the ITU Radio Regulations [i.5] there are a number of bands between 8,5 GHz
and 10 GHz that are allocated to Radiolocation service. There are national deviations to the detailed band
usages, but the basic spectrum usage regulation is the same.
Table 1: Radiolocation service frequency bands [GHz]
8 500 - 8 550
8 550 - 8 650
8 650 - 8 750
8 750 - 8 850
8 850 - 9 000
9 000 - 9 200
9 200 - 9 300
9 300 - 9 500
9 500 - 9 800
9 800 - 9 900
9 900 - 10 000

The present document contains requirements to demonstrate that ".radio equipment shall be so constructed that it both
effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1].
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Radio Equipment Directive [i.1] may apply to equipment within the scope of the
present document.
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
reference document (including any amendments) applies.
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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] Recommendation ITU-R SM.1541-5 (08-2013): "Unwanted emissions in the out-of-band domain".
[2] 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
reference 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.
[i.2] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[i.4] ERC/Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".
[i.5] ITU Radio Regulations (2012).
[i.6] Void.
[i.7] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to
the production of Harmonized Standards for application under the Radio & Telecommunication
Terminal Equipment Directive 1999/5/EC (R&TTE) and a first guide on the impact of the Radio
Equipment Directive 2014/53/EU (RED) on Harmonized Standards".
[i.8] Void.
[i.9] ETSI TR 100 028 (all parts) (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio
spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment
characteristics".
[i.10] ETSI TR 100 028-2 (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics;
Part 2".
[i.11] ETSI EN 303 213-6-1: "Advanced Surface Movement Guidance and Control System (A-SMGCS);
Part 6: Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU for deployed surface movement radar sensors; Sub-part 1: X-band sensors using
pulsed signals and transmitting power up to 100 kW".
[i.12] 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.
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3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
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: This definition is taken from ITU Radio Regulations [i.5].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
β/2 of the total mean power of a given emission
mean powers emitted are each equal to a specified percentage
NOTE 1: This definition is taken from ITU Radio Regulations [i.5].
NOTE 2: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
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 Regulations [i.5]).
pulse duration: time between the 50 % amplitude (voltage) points
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB bandwidth

-40
Chirp bandwidth
B
C
B Necessary bandwidth
N
B Maximum range over which the carrier frequency is shifted
S
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
P Pulse power of transmission
t
t Time
t Pulse duration
p
t Pulse rise time
r
t Pulse fall time
f
τ Pulse length including rise & fall times
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
CS Coastal Surveillance
FM Frequency Modulation
HR Harbor Radar
LNA Low Noise Amplifier
OoB Out-of-Band
PEP Peak Envelope Power
RED Radio Equipment Directive
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RF Radio Frequency
VTS Vessel Traffic Services
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 declared by the supplier, 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 declared operational environmental profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Operating frequency
4.2.1.1.1 Definition
The transmitter of a pulsed radar produces microwave pulses, which cause a broad frequency spectrum, depending on
the pulse duration.
In the present document the operating frequency is considered to be the frequency of the microwave emission during
the transmitting pulse and is represented by the spectral line of highest amplitude.
NOTE: It is only practicable to indicate an operating frequency for radars with unmodulated pulses. In this case a
limit for the frequency tolerance is specified. For radars with modulated pulses such a limit is not
applicable. In any case the occupied bandwidth is completely contained in the allocated frequency
band(s).
4.2.1.1.2 Limits
The frequency tolerance for a radar applying unmodulated pulses shall be ±30 MHz.
For all radar types covered by the present document the occupied bandwidth of the signal shall be contained completely
within the allocated band in use (e.g. 9 300 MHz to 9 500 MHz) in all operating modes.
4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.3.1.1.
4.2.1.2 Transmitter power
4.2.1.2.1 Definition
In the present document the transmitter power of a pulse radar is considered to be the peak value of the transmitter pulse
power during the transmission pulse (PEP).
If the transmitter power varies over the azimuth, the highest PEP over at least one rotation period has to be used.
The transmitter power shall be referenced with respect to the output port of the radar transmitter.
If the transmitter power can be varied according to azimuth, the highest PEP value measured during a period equal to at
least one rotation period shall be used.
4.2.1.2.2 Limits
The transmitter power shall be as specified by the manufacturer with an accuracy of at least ±2 dB. The peak power
value shall not exceed 100 kW (50 dBW).
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4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.4.1.2.
4.2.1.3 Out-of-band emissions
4.2.1.3.1 Definition
An important parameter of the Out-of-Band (OoB) emissions mask of the radar is the -40 dB bandwidth. Annex 8 of
Recommendation ITU-R SM.1541-5 [1] specifies the -40 dB bandwidth specified for various types of waveforms
(e.g. pulsed radar signals). With the following assumptions which apply to most airport surface movement radars these
specifications can be further simplified:
• the radar is operating in a band within the limits 8 500 MHz to 10 000 MHz;
• the pulse power is below 100 kW;
• the pulse rise time t is greater than 0,0094 t, where t is the pulse duration.
r
With the aforementioned assumptions the -40 dB bandwidth (B ) for primary non-FM pulse radars can be determined
-40
as follows:
7.6

B =
−40
t ×t
r
Where:
• t is the pulse duration;
• t is the rise time in the case of a trapezoidal pulse.
r
NOTE: For typical values of a pulse duration of t = 50 ns and a rise time of t = 10 ns the formula above yields
r
a -40 dB bandwidth value of 340 MHz.
For radars with multiple pulse waveforms, the
...