机译:基于矩形棱镜和表面元素的近区直接和间接地形影响
[1]Xi’an Research Institute of Surveying and Mapping Xi’an 710054 China;
[2]State Key Laboratory of Geo-information Engineering Xi’an 710054 China;
[3]Institute of Geospatial Information of Information Engineering University Zhengzhou 450001 China;
[4]Geological Engineering and Geomatics School of Chang’an University Xi’an 710064 China;
helmert''''s second method of condensation; direct effect; indirect effect; rectangular prism; surface element;