摘要
低频ＵＷＢＳＡＲ不同于窄带高频ＳＡＲ信号。本文针对ＶＨＦ／ＵＨＦＵＷＢＳＡＲ目标与杂波特点，建立了信号模型；在综合现有的几种检测方法基础上，提出了一种新的检测方案，即结合的变化检测和双参数ＣＦＡＲ检测。实验仿真结果表明：这种方案检测过程简单，杂波抑制性能好。
Low frequency UWB SAR signal is different from narrow band high frequency SAR in which it has its own special properties.In this paper, a signal model is derived based on these properties of target and clutter. Several target detectors are available in the literature. A new combined detector is provided which carries on the change detection and the two parameter CFAR detection in two steps.Our simulation results have shown that the combined detector is simple with significant clutter suppression.
出处
《系统工程与电子技术》
EI
CSCD
1997年第10期28-32,共5页
Systems Engineering and Electronics
关键词
雷达信号
合成孔径雷达
目标检测
VHF/UHF UWB SAR, Change detection, Two parameter CFAR detection.
