NOAA-L and NOAA-M AMSU-A Antenna Pattern Corrections

摘要

A procedure for making antenna pattern corrections to antenna temperatures of the Advanced Microwave Sounding Unit-A (AMSU-A) is presented. Antenna efficiencies, fractions of total power, over three different solid-angle regions subtended at the satellite by the Earth, cold space, and the satellite platform were calculated at thirty Earth views and four possible cold space calibration positions. These calculated results simply the process for correcting antenna temperature measurements to retrieve the true brightness temperatures from AMSU-A data.