基于匹配场处理的天波雷达高度估计算法

摘要

Skywave over-the-horizon radar usually detects targets over the sea surface using Range-Doppler (RD) processing.RD processing can obtain the slant range and Doppler frequency of the target,but the altitude can not be derived.An algorithm based on the matched-field processing is proposed to estimate the target's altitude.The algorithm uses the return signal in a single dwell.Simulation result shows that under the specified simulation scenario,the altitude estimation error is within 2000 m.Comparing with the log likelihood function algorithm,the proposed algorithm has better robustness.%天波超视距雷达通常采用距离-多普勒处理来检测海面上的目标.距离-多普勒处理可以获得目标的斜距和多普勒频率,而不能获得目标的高度信息.该文提出一种基于匹配场处理的算法来估计目标高度,算法利用单个驻留周期的回波数据来进行估计.仿真表明,在给定的仿真场景下,目标高度估计精度可达2000m左右.与已提出的对数似然函数算法相比,该算法具有更好的稳健性.