Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR10041)
Radiodetermination applications

RIR1004-21
HD-GBSAR
76 - 77 GHz
Max. 40 dBm mean e.i.r.p.
Edition 1.0 / 01.01.2025

Nr Parameter2)DescriptionComments
1Radiocommunication service--
2ApplicationGBSARHigh Definition Ground Based Synthetic Aperture Radar (HD-GBSAR). HD-GBSAR systems are operated by trained professionals only.
3Frequency band76 - 77 GHz-
4Channelling--
5Modulation / Occupied bandwidth--
6Direction / Separation--
7Transmit power / Power densityMax. 40 dBm mean e.i.r.p.
Max. 18 dBm/MHz mean e.i.r.p. spectral density.
Max. -22 dBm/10MHz e.i.r.p. out of band emissions in the bands 71-76 GHz and 81-86 GHz.
8Channel access and occupation rulesHD-GBSAR shall implement Detect and Avoid (DAA) with technical requirements as described in ECC/DEC/(21)02 Annex 2.Techniques to access spectrum and mitigate interference that provide an appropriate level of performance to comply with the essential requirements of Directive 2014/53/EU shall be used.
9Authorisation regimeSwitzerland: License exempt.
Liechtenstein: General authorisation.
Operation on NIB / NPB (Non interference basis / non protection basis).
HD-GBSAR shall not be operated in the vicinity (i.e. within 50 m line of sight) of fixed transport infrastructure radar and/or railway level crossing obstacle detection radar operating in the 76-77 GHz band.
10Additional essential requirements--
11Frequency planning assumptions--
12Planned changes--
13ReferenceEN 303 661 / ECC/DEC/(21)02 / ERC/REC 70-03, Annex 6.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numberG/TBT/N/CHE/289
2024/9020/CH
-
15RemarksEN 301 489-3-

Normative part: 1 to 11
Informative part: Nr 12 to 15

1) RIR for similar and/or other applications are available under: https://www.bakom.admin.ch/bakom/en/home/frequenzen-antennen/nationaler-frequenzzuweisungsplan/schnittstellen-anforderungen.html
2) For explanations and legal status, please refer to basis document 784.101.21 / RIR0000