高分辨雷达的目标自动检测器
AUTOMATIC TARGET DETECOR FOR HIGH RESOLUTION RADAR
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摘要: 本文研究了高分辨雷达(HRR)的目标自动检测器。由于HRR的分辨距离已可以与目标电尺寸相比拟,因此目标回波信号在时间上应表示为散射中心在径向上投影分布的函数。本文研究的是把目标回波信号通过变换后与门限作比较,如超过门限,则判为有目标,否则就判为无目标。文中列出各种变换方法,介绍了HRR技术实现和波形分析,最后还给出一个实际雷达目标自动检测器实现框图和其仿真性能结果。
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关键词:
- 高分辨雷达; 信号检测; 目标自动检测器
Abstract: The automatic target detector for High Resolution Radar(HRR) is considered. The detection performance of HRR is very important for target recongnition and imaging. Due to the size of the target is larger than the range resolution cell of the radar, the backscatered power of the target is recorded as a function of time. So a mapping from the function into a point of the real line or numbrical value T 0 is done. If T0 is greater than lambda 0 (threshold), then H1 is accepted, otherwise H0 is accepted. In this paper, the method of conversion is also considered. -
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