GCP Acquisition Using Simulated SAR Image Derived from DTM

Abstract

A method for Ground Contral Point, GCP acquisi-tion using simulated SAR image, derived from Digital Terrain Model, DTM, is proposed.
The Japanese Earth Resources Satellite-1, JERS-1, will be launched in 1992. Before that it would be better to prepare GCPs for assessment of geometric accuracy of SAR imagery data.
In order to acquire GCPs without real SAR imagery data, simulated SAR images were generated from DTM. In this study, simulated image is derived from elevation data only, under an assumption of a simple scattering model without consideration of complex dielectric constant of the targets of interest.
The performance of the acquired GCPs was evaluated by using several measures with texture features of GCP chip images.
This paper describes the details about proposed method for acquisition of GCPs and simulated results on relationship between texture features and GCP matching success rate corresponding to the crosscorrelation between reference and distorted GCP chip images.