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地球同步轨道星载毫米波降雨雷达数据模拟及地表杂波抑制

AData simulations and surface clutter suppression methods for the geostationary millimeter wave weather radar

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摘要

首先对地球同步轨道星载降雨雷达进行了介绍; 其次基于其技术参数, 利用美国第二代机载降雨雷达(APR-2)的实测数据模拟了地球同步轨道星载毫米降雨雷达的数据并对模拟的强度和速度场数据进行了分析; 最后根据时域信号(I、Q)和功率谱数据的特征, 采用时域无限脉冲响应(IIR)椭圆滤波器和频域高斯模型自适应处理(GMAP)两种方法对地表杂波进行了抑制, 并对抑制前后的廓线数据和回波图进行了对比分析.结果表明, 采用IIR和GMAP方法能够对受弱风条件下海面杂波影响的近地面气象回波进行较好的恢复, 对地表杂波具有较好的抑制效果.

Abstract

Brief introduction of the geostationary Doppler weather radar (GDWR) was described. Secondly, based on the Satellite-Earth geometry model, observational data of GDWR were simulated using the APR-2 data, and the rainfall intensity and velocity field data were analyzed. By combining the characteristics of power spectrum data and time domain signals, the surface clutter was restrained using the Gaussian model adaptive processing method (GMAP) and fifth-order elliptic infinite impulse response ground clutter filter (IIR). The comparisons were carried out between the filtered data and the original data, which indicates that the weather radar echo influenced by the ocean surface clutter can be correctly recovered using IIR and GMAP methods.

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中图分类号:P412.25

DOI:10.11972/j.issn.1001-9014.2017.04.017

基金项目:国家自然科学基金(41375043,41575022)

收稿日期:2016-08-10

修改稿日期:2016-12-13

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作者单位    点击查看

唐顺仙:中国科学院大气物理研究所 中层大气和全球环境探测重点实验室, 北京 100029中国科学院大学, 北京 100049成都信息工程大学 中国气象局大气探测重点开放实验室, 四川 成都 610225
吕达仁:中国科学院大气物理研究所 中层大气和全球环境探测重点实验室, 北京 100029
何建新:成都信息工程大学 中国气象局大气探测重点开放实验室, 四川 成都 610225
李 睿:成都信息工程大学 中国气象局大气探测重点开放实验室, 四川 成都 610225成都理工大学 地球物理学院, 四川 成都 610059
李学华:成都信息工程大学 中国气象局大气探测重点开放实验室, 四川 成都 610225
王 皓:成都信息工程大学 中国气象局大气探测重点开放实验室, 四川 成都 610225

联系人作者:唐顺仙(tsx@mail.iap.ac.cn)

备注:唐顺仙(1985-), 男, 四川成都人, 博士研究生. 主要从事天气雷达技术的研究.

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引用该论文

TANG Shun-Xian,LV Da-Ren,HE Jian-Xin,LI Rui,LI Xue-Hua,WANG Hao. AData simulations and surface clutter suppression methods for the geostationary millimeter wave weather radar[J]. Journal of Infrared and Millimeter Waves, 2017, 36(4): 481-489

唐顺仙,吕达仁,何建新,李 睿,李学华,王 皓. 地球同步轨道星载毫米波降雨雷达数据模拟及地表杂波抑制[J]. 红外与毫米波学报, 2017, 36(4): 481-489

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