CONTENTS

Annex 1 - Performance and interference criteria for spaceborne active sensors
 1     Introduction
 2     Altimeters
        2.1     Performance criteria
        2.2     Interference criteria
 3     Scatterometers
        3.1     Performance criteria
        3.2     Interference criteria
 4     Precipitation radars
        4.1     Precipitation radars based upon TRMM
                  4.1.1     Performance criteria
                  4.1.2     Interference criteria
        4.2     Precipitation radars based upon TRMM follow-on
                  4.2.1     Introduction
                  4.2.2     TRMM follow-on and 35 GHz band precipitation radar
                  4.2.3     Technical characteristics of the 35 GHz precipitation radar
                  4.2.4     Performance and interference criteria
 5     Synthetic aperture radars
        5.1     Performance criteria of SARs
        5.2     Interference criteria of SAR
                  5.2.1     Processing gain of noise
                  5.2.2     Range processing gain of interference signals
                  5.2.3     Azimuth processing gain of pulsed interference signals
                  5.2.4     Calculation of allowable interference
                  5.2.5     Input/output signal characteristics of SAR operating in the bands 432-438 MHz  and 1 215-1 300 MHz
                  5.2.6     Input/output signal characteristics of SARs operating in the bands 3 100-3 300 MHz and 5 250-5 570 MHz
                  5.2.7     Input/output signal characteristics of SARs operating in the bands 8 550 MHz and 9 500-9 800 MHz
                  5.2.8     Interference criteria
                  5.2.9     Availability criterion
 6     Cloud profile radars
        6.1     Performance criteria for 94 GHz cloud profile radar
        6.2     Interference criteria of the cloud profile radar
        6.3     Availability criteria of the cloud profile radar