Quality Evaluation about Dualpolarimetric Upgrading Data of CINRAD/SA Radar
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Abstract:
In this study, we evaluate the detection sensitivity， ground clutter suppression performance and the quality of polarimetric parameters, including differential reflectivity (ZDR), differential phase shift (〖WTBX〗Φ〖WTBZ〗DP), specific differential phase (KDP) and correlation coefficient, based on the Sband Dualpolarimetric radar of Guangzhou. The results show that the detection sensitivity retain the fine qualities and the effect of ground clutter suppression has been greatly improved after the upgrading; 〖WTBX〗Z〖WTBZ〗DR has a stable systematic bias not exceeding 0.2 dB, increasing with 〖WTBX〗Z〖WTBZ〗 in agreement with to the empirical value. The initial phase of〖WTBX〗 Φ〖WTBZ〗DP shows good stability, and 〖WTBX〗K〖WTBZ〗DP is sensitive to precipitation, especially corresponding well to heavy rainfall. Correlation coefficient can be used to divide successfully meteorological and nonmeteorological targets.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.