scope:

Characteristics and protection criteria for radionavigation-satellite service (RNSS) receiving earth stations operating in the band 1 215-1 300 MHz are presented in this Recommendation. This information is intended for performing analyses of radio-frequency interference impact on RNSS (space-to-Earth) receivers operating in the band 1 215-1 300 MHz from radio sources other than in the RNSS.

The ITU Radiocommunication Assembly,

considering

a) that systems and networks in the radionavigation-satellite service (RNSS) provide worldwide accurate information for many positioning, navigation and timing applications, including safety aspects for some frequency bands and under certain circumstances and applications;

b) that any properly equipped earth station may receive navigation information from systems and networks in the RNSS on a worldwide basis;

c) that Recommendation ITU-R М.1787 provides technical descriptions of systems and networks in the RNSS and technical characteristics of transmitting space stations operating in the bands 1 164-1 215 MHz, 1 215-1 300 MHz and 1 559-1 610 MHz;

d) that Recommendation ITU-R М.1904 provides technical characteristics and protection criteria of receiving space stations operating in the RNSS (space-to-space) in the bands 1 164-1 215 MHz, 1 215-1 300 MHz and 1 559-1 610 MHz;

e) that Recommendation ITU-R M.1463 contains system characteristics for radiodetermination systems in the 1 215-1 400 MHz band;

f) that Recommendation ITU-R M.1901 provides guidance on this and other ITU-R Recommendations related to systems and networks in the RNSS operating in the frequency bands 1 164-1 215 MHz, 1 215-1 300 MHz, 1 559-1 610 MHz, 5 000-5 010 MHz and 5 010-5 030 MHz,

recognizing

a) that the band 1 215-1 300 MHz is allocated on a primary basis to the Earth explorationsatellite service (EESS) (active), radiolocation service, RNSS (space-to-Earth and space-to-space) and space research service (active) in all three Regions;

b) that in a number of countries the band 1 215-1 300 MHz also contains primary allocations to the fixed and mobile services, and/or to the radionavigation service (limited in some cases to aeronautical radionavigation use in a portion of the band);

c) that No. 5.329 of the Radio Regulations (RR) states: "Use of the radionavigation-satellite service in the band 1 215-1 300 MHz shall be subject to the condition that no harmful interference is caused to, and no protection is claimed from, the radionavigation service authorized under RR No. 5.331. Furthermore, the use of the radionavigation-satellite service in the band 1 215-1 300 MHz shall be subject to the condition that no harmful interference is caused to the radiolocation service. RR No. 5.43 shall not apply in respect of the radiolocation service. Resolution 608 (WRC-03) shall apply";

d) that RR No. 5.332 states that EESS (active) in the band 1 215-1 260 MHz shall not cause harmful interference to RNSS,

noting

that Recommendation ITU-R RS.1749 contains characteristics for various space-borne synthetic aperture radars in the band 1 215-1 300 MHz and Recommendation ITU-R RS.1347 recommends that sharing be considered feasible in the band 1 215-1 260 MHz between space-borne synthetic aperture radars and RNSS based on demonstrations including ground compatibility testing,

recommends

that the characteristics and protection criteria of receiving earth stations given in Annex 1 should be used in performing analyses of the interference impact on RNSS (space-to-Earth) receivers operating in the band 1 215-1 300 MHz from radio sources other than in the RNSS.