pfa

• Geometric distortion is traditionally corrected by an image resampling operation which is applied as a post - processing step to pfa . the scene size limits of pfa presented by range curvature qpe , can be alleviated by using an efficient image domain space - vairant post - filter
  通常采用图像域插值的方法校正几何失真,而利用空变滤波器使散焦的点重新聚焦,这些校正方法可以减轻距离弯曲对成像范围的限制。