Geo-location error correction using sensor parameters extracted from spaceborne SAR raw data

Spaceborne SAR imagery inherently contains the errors from the ground range nonlinearity and earth rotation. The fusion of SAR image and GIS information may enhance the SAR image quality by correcting the geometric error which is induced from the geo-location and terrain error. In this paper, a geo-location error correction method is proposed. This scheme does not require the aids of GCP and DEM, and instead directly extract the key correction parameters from the SAR raw data. The simulation results using Radarsat-1 SAR image shows good performance in correcting a geo-location error without aid of auxiliary data.