Fine Registration Technology of Multi-temporal Spaceborne SAR Image
多时相星载SAR图像精配准技术研究

The technology to register the multi-temporal spaceborne SAR image is presented.Manual coarse registration is executed to solve the rotation and scale problem first,and then homologous feature points in the images are detected by feature point detector and image matching.The irregular triangle network is constructed based on homologous points and fine registration is realized.Several couples of spaceborne SAR images are fine registered by the technology and accurate checking shows that the registration achieves good effect and the accuracy reaches less than one pixel.