scope:

This Recommendation provides a method for use in the initial evaluation of the potential for relevant1 radio sources other than in the radionavigation-satellite service (RNSS) to cause pulsed interference² to a radionavigation-satellite system or network operating in the 1 164-1 215 MHz, 1 215-1 300 MHz, and 1 559-1 610 MHz frequency bands. The evaluation method components are a set of equations and a table of recommended parameters and allowable degradation ratios³ for each frequency band and RNSS receiver type. Although the evaluation method equations are applicable to RNSS receivers in the 1 559-1 610 MHz band, further studies would be needed to determine the necessary table of recommended method parameters and allowable degradation ratios for that frequency band before the evaluation method is completely defined for the 1 559-1 610 MHz band.

² Recommendation ITU-R M.1318-1 provides an analysis method for continuous interference sources.

³ See Annex 1, § 3 for the degradation ratio description and § 4 for more information on the allowable degradation ratio values.