echo_simulation

代码说明：

  光学图像的几何仿真，采用已有的光学图像作为参考，布置在传感器照射范围区域，然后根据卫星轨道、姿态等获得新的图像，该图像能够反映原始图像的几何特性(Optical image geometry simulation, using the existing optical image as a reference, arranged in the area illuminated area of ​ ​ the sensor, then the satellite orbit, attitude and so obtain a new image, the image can reflect the geometric properties of the original image)