Research on airborne stripe SAR image correction model in region of lack control points

摘要

This paper contrapose the airborne stripe SAR image correction, a new method was discussed which utilized the junction condition in overlap area of adjacent stripe SAR images to assist determination the coefficients of rectification function. At first, the rectification function style was chosen, considering the area of every stripe SAR image is small and narrow, the polynomial correction which has second order term of x and y is chosen. During the processing of determine rectification function, the GCPs and homologous point are used to establish the error equations, and then the coefficients is solved by adjustment integrated in whole area. The rectification function is utilized to every stripe image, and then the rectified stripe images are mosaic to the orthoimage of whole interesting area after the rectification. Since the junction condition is used, the number of GCPs can be reduced and the consistency in overlap area of adjacent stripe images is much better. The experiment Result has verified the reliability and validity of this method, it is suitable the area with few GCPs.