为了提高雷达的测距精度和探测距离,通常采用脉冲压缩(PC)处理的方法对信号进行处理,既保证了远距离探测所需要的信号能量,又使得时宽带宽积远远大于1 。但是雷达发射信号时宽的增大必然会带来探测盲区的增加。为了解决这一问题,提出一种截断式压缩脉冲的方法,并对其工作原理及性能进行了详细分析。该方法区别于发射短脉冲补盲和组合调制脉冲的方法,不仅能够解决盲区问题,而且可以减小单基站雷达系统的复杂度。通过仿真实验对该方法的原理及其应用于雷达探测进行了验证,结果表明截断式压缩脉冲可以有效解决传统脉冲压缩方法带来的盲区增大问题。
In order to improve the range?finding accuracy and detection distance of the radar,the pulse compression(PC)processing method is commonly used to process the signal,which can ensure the needed signal energy of remote detection,andmake the time?bandwidth product far greater than 1. However the increase of the radar sending signal time?width will increase thedetection blind zone inevitably. To solve this problem,a truncated pulse compression method is proposed. Its working principleand performance are analyzed in detail. This method is different from the methods of launching short pulse for blind zone coverageand combined modulation pulse,which can solve the blind zone problem,and reduce the complexity of radar system with singlebase station. The principle of this method and radar detection with this method were verified with simulation experiments. Thesimulation results show that the truncated compression pulse can effectively solve the problem of blind zone increase causing bytraditional pulse compression method.