CONTENTS - RECOMMENDATION ITU-R M.1639 - Protection criterion for the aeronautical radionavigation service with respect to aggregate emissions from space stations in the radionavigation-satellite service in the band 1 164-1 215 MHz

Annex 1 Aggregate protection criterion determination
1     Definition of epfd
2     Maximum aggregate epfd (all RNSS systems) to protect the ARNS
        2.1     Comparison between the impact of CW interference type of signal and RNSS type of interference signal on DME/TACAN on-board receivers
                  2.1.1     Susceptibility of DME receivers from interference by RNSS signals (spread spectrum signals)
                  2.1.2     CW RNSS measurement results
        2.2     Circular polarization isolation achieved by the DME antenna
        2.3     Apportionment of the DME maximum allowable aggregate interference level to RNSS