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《Beijing Surveying and Mapping》 2018-10
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Combined Adjustment of Space-borne Laser Ranging Data and Linear Array Images

LIU Yumei;GAO Meihuan;WANG Gang;Key Laboratory of Fundamental Geographic Information and Digital Technology of Shandong Province,Shandong University of Science and Technology;  
Without ground control points,when the optical stereoscopic mapping satellite is used to measure the 1∶10000 scale topographic map,the elevation accuracy is difficult to meet the requirements.In this paper,laser ranging data is used as a control constraint condition,which is introduced into the bundle adjustment,and a combined bundle adjustment model is constructed.Experimental data is simulated based on satellite parameters,laser altimeter parameters and DEM data.The test result is that the elevation accuracy reaches 0.88 meters,which satisfies the accuracy of 1∶10000 scale global topographic map without points.This shows that the laser ranging data can significantly improve the elevation accuracy.
【Fund】: 国家自然科学基金项目(41571443)
【CateGory Index】: P237
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