Satellite-Borne 90 Ghz Radiometer Experiment (SABREX), Phase A1

摘要

Flight configurations for a 90 GHz satellite radiometer on a Stretched ROHINI Satellite bus are discussed. The satellite can be flown with its longitudinal symmetry axis in nadir direction (configuration 1) and with its longitudinal symmetry axis in direction of the velocity vector (configuration 2). Configuration 2 has a longer feeding system, lower overall noise due to lower feed system sidelobes, and better scanning possibilities. The main scientific objective of this experiment is the analysis of the capabilities of a 90 GHz satellite radiometer to determine the fluid water content of clouds, to measure low rain rates, to map the cloud cover and extended targets (diameter 1 km) and to map snow cover. Instrument design, radiometer calibration, data processing, ground support, and development schedule are considered.