Radiolocation-satellite service

Radiolocation-satellite service (short: RLSS) is – according to Article 1.49 of the International Telecommunication Union´s (ITU) Radio Regulations (RR)[1] – defined as «A radiodetermination-satellite service used for the purpose of radiolocation. This (radiocommunication) service may also include the feeder links necessary for its operation.»

See also
SAR-Lupe (space radio station of the radiolocation-satellite service)

Classification

This radiocommunication service is classified in accordance with ITU Radio Regulations (article 1) as follows:
Radiodetermination service (article 1.40)

  • Radiolocation service (article 1.48)
    • Radiolocation-satellite service (article 1.49)

The radiolocation-satellite service distinguishes basically

  • Earth radio stations
  • Feeder links and
  • Space radio stations

For example military radar sensors in earth satellites operate in the radiolocation-satellite service n this service.

Examples of radio stations in the radiolocation-satellite service 
List of radar-satellites (not complete)
NameCountrySensoric
LacrosseUSAmilitary radar (imaging) reconnaissance satellite
SAR-LupeGermanymilitary radar (imaging) reconnaissance satellite
IGSJapanradar reconnaissance and optoelectronic reconnaissance
RORSATRussian FederationRadar Ocean Reconnaissance SATellite

Frequency allocation

The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012).[2]

In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is within the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared.

Example of frequency allocation
Allocation to services
     Region 1           Region 2           Region 3     
24.65-24.75 GHz
FIXED
FIXED-SATELLITE
(Earth-to-space)
INTER-SATELLITE
 24.65-24.75
INTER-SATELLITE
RADIOLOCATION-SATELLITE
(Earth-to-space)
 24.65-24.75
FIXED
FIXED-SATELLITE
(Earth-to-space)
INTER-SATELLITE
MOBILE

References / sources
  1. ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.49, definition: radiolocation-satellite service
  2. ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations
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