1. Liaoning Technical University, School of Geomatics, Fuxin, Liaoning 123000, ChinabSatellite Surveying and Mapping Application Center, National Administration of Surveying, Mapping and Geoinformation, Beijing 100048, China
2. Liaoning Technical University, School of Geomatics, Fuxin, Liaoning 123000, China
3. Satellite Surveying and Mapping Application Center, National Administration of Surveying, Mapping and Geoinformation, Beijing 100048, China
4. Satellite Surveying and Mapping Application Center, National Administration of Surveying, Mapping and Geoinformation, Beijing 100048, ChinacChang’an University, School of Geology Engineering and Geomatics, Changan, Shanxi 710064, China