The regional quasi-geoid model can realize the transformation between geodetic height and normal height,the current regu-lar grid model however cannot be effectively fused with remote sensing image data processing. Aiming at the requirement of rapid height transformation of satellite remote sensing images in the Qomolangma peak area,a practical regional quasi-geoid model applica-ble to various scales of maps is developed to improve the efficiency of height transformation from geodetic height to normal height for satellite remote sensing images. At first,the variety of regional quasi-geoid in the Qomolangma peak area will be analyzed. Then the gradient function is used to describe the change trend of regional quasi-geoid and to divide the section. Finally,the practical model of regional quasi-geoid can be constructed according to the accuracy requirement of 1∶10000 scale mapping for the satellite remote sens-ing images. The data in the Qomolangma peak area is employed to verify the new algorithm. It is shown that the practical model of re-gional quasi-geoid can meet the height accuracy requirement of 1∶10000 scale topographic mapping.
维普
万方数据