一种利用宽带信号对弹道目标成像和跟踪的方法

Method of imaging and tracking ballistic target using wideband signals

宽带成像雷达通常采用窄带跟踪、宽带成像的交替工作方式。该方法需要花费两个雷达重复周期才能完成对目标的跟踪和宽带成像,降低了雷达跟踪、成像的数据率。为了克服这个缺点,提出了一种基于宽带固态相控阵雷达对弹道目标成像同时进行跟踪的方法,一个周期就可同时完成对目标的成像和跟踪,大大节省了雷达资源,提高了雷达数据率。同时论述了宽带信号距离信息和角度信息提取方法,利用仿真和模拟试验验证了方法的正确性。

Usually the wideband imaging radar works m the alternation moue u~ tl,~,,lt~ ~, and imaging in wideband signal. It takes two pulse repetition cycles to finish one of tracking and imaging, so that the track and image rate are slow. This paper puts forward a method using wideband signals to track ballistic targets based on solid state phase array. It changes completely the alternation mode of narrow and wideband signals. Imaging and tracking can be finished in a single cycle so that the radar resource can be saved and the tracking and imaging rate increases greatly. In the mean time the extracting methods of range and angle information are discussed. The method is tested and verified by simulation.