此例程为配套书籍的第六章例题6-6的相对应代码，功能为计算雷达回波信号的多谱勒时频谱，编程环境为matlab。-This routine supporting books Chapter Example 6-6 corresponding code function for calculating the radar echo signal Doppler spectrum for Matlab programming environment.

matlab实现的雷达部分功能，距离与雷达截面积以及回波强度-radar matlab realize some functions