海杂波反射系数模型及雷达回波信号计算方法

当雷达在海面下视工作时,较强的海杂波信号会严重影响雷达的目标检测和分析能力。由于海杂波对于不同用途的雷达所表现出的特征可能有极大的差别,因此,只有分析并掌握海杂波对雷达的影响特征,才能设计出合适的信号处理方法,并预测出雷达的检测性能。基于雷达的海面试验数据,提出了一种海杂波反射系数模型,并在此基础上提出了一种实时计算海杂波回波信号强度的方法。通过对比理论海杂波计算结果与雷达的实测海杂波结果,验证了所提算法的有效性和可行性。

Sea Clutter Backscatter Coefficient Model and EchoSignal Calculation Method for Radar

When radar operates on the sea in a looking-down mode,the strong sea clutter affects the target estimation and analysis seriously.The characteristics of sea clutter for different emplyments of radar may be very different.Therefore,only by analyzing and understanding the influence characteristics of sea clutter for radar,can we design an appropriate single processing method and predict the detection performance.Based on the field experimental date of radar,a suitable sea clutter backscatter coefficient model and a real-time sea clutter echo signal power computation method are proposed.Finally,the effectiveness and feasibility of the method are proved by comparing the theoretical sea clutter calculation results with the measured sea clutter results of radar.