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天气雷达网络的进展
引用本文:吴琼,仰美霖,陈林,尹红刚,商建,谷松岩. 2023. 一种星载降水测量雷达和地基天气雷达的频率修正方法. 气象学报,81(2):353-360. DOI: 10.11676/qxxb2023.20220093
作者姓名:吴琼  仰美霖  陈林  尹红刚  商建  谷松岩
作者单位:1.许健民气象卫星创新中心,中国气象局中国遥感卫星辐射测量和定标重点开放实验室/国家卫星气象中心(国家空间天气监测预警中心),北京,100081;2.北京城市气象研究院,北京,100089
基金项目:国家自然科学基金项目(41905063、42005109、41905034、42005105)
摘    要:通过结合全球降水测量卫星(GPM)反演算法中用到的0℃层亮带模型以及米散射计算,生成了固态、液态以及混合相态3种降水情况下的散射函数查算表;通过与GPM实测数据的对比,验证了查算表的精度,表明散射计算的最大偏差小于0.5 dB。基于该查算表,完成了星载Ku波段雷达到S波段雷达的频率修正。对散射函数的分析表明:Ku波段到S波段的频率修正取决于相态以及谱参数(
关 键 词:全球降水测量卫星  亮带  米散射  查算表  频率修正
收稿时间:2022-05-18
修稿时间:2022-09-19

The development of weather radar network
Wu Qiong, Yang Meilin, Chen Lin, Yin Honggang, Shang Jian, Gu Songyan. 2023. A frequency correction algorithm for spaceborne precipitation measurement radar and ground-based weather radar. Acta Meteorologica Sinica, 81(2):353-360. DOI: 10.11676/qxxb2023.20220093
Authors:WU Qiong  YANG Meilin  CHEN Lin  YIN Honggang  SHANG Jian  GU Songyan
Affiliation:1.Innovation Center for FengYun Meteorological Satellite(FYSIC),Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites,National Satellite Meteorological Centre(National Centre for Space Weather),China Meteorological Administration,Beijing 100081,China;2.Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089,China
Abstract:By combining the bright band model used in the GPM retrieval algorithm and Mie scattering calculation, the lookup table of scattering functions is generated for three types of precipitation, i.e., solid precipitation, liquid precipitation and mixed phase precipitation. The accuracy of the lookup table is verified by comparing with the measured data of GPM. The result shows that the maximum deviation of scattering calculation is less than 0.5 dB. Based on the lookup table, the frequency correction from spaceborne Ku band radar to S-band radar is completed. The analysis of the scattering function shows that the frequency correction from Ku band to S band depends on the phase and spectral parameter
Keywords:GPM  Bright band  Mie scattering  Lookup table  Frequency correction
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