信噪比对比相测高精度的影响分析

Analysis of Effect of SNR on the Accuracy of Height Finding by Phase Comparison

比相测高雷达是利用多个天线馈源分别接收目标的回波信号,根据不同馈源接收回波信号时产生的相位差,再结合已知的目标距离,从而获取目标高度信息.针对比相测高的精度受多种因素的影响问题,着重讨论其中的一个因素信噪比对测高精度的影响,进行了仿真分析,得到了有关结论.

The height finding radar by phase comparison takes advantages of many antenna feeders receiving echo signal of targets respectively, and acquires the height information of targets in terms of the phase difference resulted from different echoes of feeders and combining the known target range. Concerning for the accuracy of height finding by phase comparison being affected by a number of factors, the effect of one of the factors, i.e. SNR on height finding accuracy was studied, and the simulation and analysis were made, from which some related conclusions were drawn.