A Method to Increase the Scanning Rate of Phased-Array Weather Radar
A Method to Increase the Scanning Rate of Phased-Array Weather Radar
复制标题
提高相控阵气象雷达扫描速率的方法
DOI：
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发表时间：
2015
影响因子：
8.2
通讯作者：
D. Zrnic
中科院分区：
文献类型：
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作者：
V. Melnikov;R. Doviak;D. Zrnic
为了将相控阵雷达的扫描速率增加两倍或更多倍，采用了向两个或更多个方向连续发射两个或更多个脉冲，并同时接收来自这些方向的天气回波。然而，如果存在强的反射率梯度，则主瓣-副瓣耦合回波污染了所需的主瓣-主瓣（m-m）耦合回波，并限制了天气的准确分析。为了恢复m-m回波，导出了一种技术，该技术恢复所需的m-m电压，天线旁瓣电平高达-30 dB，并且对于两个同时采样的波束方向，回波功率差为100 dB。使用WSR-88 D雷达收集的数据和模拟PAR操作的技术进行了演示。
To increase the scanning rate of phased-array radar by a factor of two or more, the contiguous transmission of two or more pulses toward two or more directions and simultaneous reception of weather echoes from those directions is employed. However, if there are strong gradients of reflectivity, mainlobe-to-sidelobe coupled echoes contaminate wanted mainlobe-to-mainlobe (m-m) coupled echoes and limit the accurate analysis of weather. To retrieve m-m echoes, a technique is derived that restores wanted m-m voltages for antenna sidelobe levels as high as -30 dB and the difference in echo power of 100 dB for two simultaneously sampled beam directions. The technique is demonstrated using data collected with the WSR-88D radar and simulating PAR operations.