天气雷达低仰角杂波干扰区域性能分析

Research on the Property of Low Elevation Clutter Interference Altitude in Weather Radar

基于天气雷达方程,本文推导了天气雷达在探测气象目标过程中,在低仰角一个波束范围内扫描遇到杂波干扰时,接收机所接收到的目标回波与干扰杂波回波功率比,即信杂比(SCR)。分析计算出雷达在此仰角下的最大有效探测范围,认为在此范围外接收到的含有杂波的气象目标回波信号接收机后端不能有效去除干扰。最后分析了此区域相关特性。

This paper derived the signal-to-clutter ratio (SCR), i.e. the power ratio of radar signal to clutter, at the receiver based on the radar function when the weather radar meets with clutter within the low-altitude wave in the process of detecting the target. The analysis indicated that radar is in the range of the maximum power in this altitude. We consider that the clutter out of this range cannot be removed from the receiver. In the final, we analysis the property of this altitude.