雷达目标回波数字模拟的TMS320C6201实现

Digital Simulation of Radar Target Echo Based on TMS320C6201

雷达信号模拟器是数字模拟技术与雷达技术相结合的产物,他通过模拟的方法产生机载雷达回波信号,以便在实际雷达系统不进行试飞的条件下,对雷达系统进行调试。特别是现代雷达功能越来越复杂,对其各部分及系统的调试和测试变得越来越困难,外场试飞实验和调试成本高,因此,研制雷达信号模拟器是非常必要的。而且,随着电子干扰与反干扰技术的迅速发展,如何测试和评估电子干扰与反干扰效果也逐渐成了一个难题。通过雷达信号模拟器,可以在模拟的雷达回波中加入各种类型的干扰,因而可以方便地对雷达的抗干扰能力进行全面测试。介绍了一种新的机载相控阵雷达视频信号模拟器中目标信号的模拟方法和基于TMS320C6201的硬件实现。该模拟器采用软硬件相结合的方法,由计算机根据雷达工作参数预先设定并计算目标数据,然后将数据加载到硬件电路中,硬件电路实时合成视频雷达回波信号并输出。

Radar signal simulator is a resuk of digital simulation technique combining with radar technique. It produces simulating radar reflected signal,which makes it possible to test the radar system on the ground. For the important use of radar signal simulator in radar testing, performance evaluating, equipment maintenance and so on, the technique of radar signal simulation has being developed and it has been an important part of radar technique. It introduces the software and hardware implementation of the target simulation of real -time radar simulator in this paper. Based on the radar working parameters and the user - defined radar echo environment, the target data is calculated in advance by a personal computer. The real- time calculation is carried out by TMS320C6201. The signal generation circuits compose the real- time digital signal. The real - time radar video signal is achieved by the digital signal after D/A converters.