目标照射雷达（target illumination radar)是用来对指定目标提供电磁波照射的雷达，以使该目标的反射波能被另外的传感器接收利用。
利用外照射源对目标进行探测是目前电子对抗研究的一个热点，因为该体制雷达具有良好的“四抗”性能。
Target detection of the passive bistatic radar by non-cooperative illumination is a focus on which the current ECM study is made of for its advantages of "four countermeasures" .
目标的雷达散射截面（RCS）与照射频率和照射角有关。
The radar cross section (RCS) of a target is dependent on frequency as well as observation angle.
以沙漠、住宅区、工业区等面目标为对象的雷达引信所照射的地面面积较大，可以将其看成是由大量散射单元构成。
Radar fuse, which considers terrain targets such as desert, residential area and industrial area, irradiates a large area which can be regarded as components of many scattering cells.
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