range-Doppler processing 距离多普勒图像

• Standard range-Doppler Processing

标准距离多普勒处理中，接收信号rxdata是一个的矩阵，M是一个CPI中 脉冲的个数；

首先要进行脉冲压缩，将rxdata拉直为向量，与发射信号做自相关，也就是匹配滤波，

然后，再将匹配滤波的结果 由向量变回矩阵，对每一行分别做FFT变换，将目标的多普勒频率提取出来.这就是标准

距离多普勒处理的过程。

The received signal rxdata is regarded as a matrix, and M is the number of pulses in a CPI.

There are mainly two steps in standard range Doppler processing.

First, pulse compression,that is, matched filtering,is performed. The  matrix rxdata is straightened into a vector, which is autocorrelated with the transmitted signal.

Then,we change  the result of the matched filtering from the vector back to the matrix, and each line is separately subjected to FFT  to get the Doppler frequency of the target. 

仿真结果验证：

关键是信号模型的建立，用matlab（2016）自带的