论文信息 - Development Status of Rain Radar for Tropical Rainfall Measuring Mission

Development Status of Rain Radar for Tropical Rainfall Measuring Mission

Design concept, system parameters, calibration strategies and development status of the TRMM radar are presented. The radar, operating at 13.8 GHz and designed to meet TRMM mission objectives, has the minimum measurable rain rate of 0.5 mm/h with a range resolution of 250 m, a horizontal resolution of about 4 km, and a swath width of 220 km. A 128-element active phased array system is adopted to achieve a contiguous scanning within the swath. The radar development is under a design phase including test fabrication of SSPAs and PIN-diode phase shifters. A combined internal and external calibration scheme is also being developed to assure quantitative rainfall measurements.

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