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SAR成像之点目标仿真(三)—— 仿真结果分析
2022-07-23 05:48:00 【lightninghenry】
上一期我们已经成功得到了点目标的数据,本期我们来分析下回波数据,这一期对后面成像算法的理解尤为重要。
为了加快仿真速度和观察地更加直观,我们对一些参数做下微调(比如之前幅宽和方位向范围都比较小,相当于是区域成像),为了说明问题,这次我们将方位向范围取的再大一些(但和实际情况相比还是很小),将主频调整为0.88GHz,并将目标数量调整为5个。
%目标方位向范围,方位向为X轴
Xmin=-5000;
Xmax=5000;
Ntarget=5; % 目标数量
Ptarget=[-500*DX,Yc-200*DY,1.5 % 目标位置,最后一列为等效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]; 调整后的回波数据如下,可以看到幅值不再是一个平面,而是有所起伏。

回波幅值的俯视图如下:
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