摘要
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2000 m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。
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.
出处
《电子与信息学报》
EI
CSCD
北大核心
2013年第2期401-405,共5页
Journal of Electronics & Information Technology
基金
国家自然科学基金(61032010)资助课题
关键词
天波超视距雷达
高度估计
匹配场处理
Skywave over-the-horizon radar
Altitude estimation
Matched-field processing
