Point target simulation of SAR imaging (III) -- Analysis of simulation results

In the last issue, we have successfully obtained the data of point target , In this issue, we will analyze the echo data , In this issue, it is particularly important to understand the following imaging algorithms .

In order to speed up the simulation and make the observation more intuitive , Let's fine tune some parameters （ For example, the previous width and azimuth range are relatively small , Equivalent to Regional imaging ）, To illustrate , This time we will take the azimuth range a little larger （ But compared with the actual situation, it is still very small ）, Adjust the main frequency to 0.88GHz, And adjust the target quantity to 5 individual . 

% Target azimuth range , Azimuth is X Axis 
Xmin=-5000;  
Xmax=5000; 

Ntarget=5;  %  Target number 
Ptarget=[-500*DX,Yc-200*DY,1.5  %  Target location , The last column is equivalent RCS
         -500*DX,Yc+200*DY,1.5
         0,Yc,2
         500*DX,Yc-200*DY,1.2
         500*DX,Yc+200*DY,1.2];  

The adjusted echo data is as follows , You can see that the amplitude is no longer a plane , Instead, there are ups and downs .

The top view of echo amplitude is as follows ：