Normal Physics Model of Aerial Remote Sensing Platform and Systemic Accuracy Assessment Variable Baseline-height Ratio
YAN Lei;LI Yingcheng;ZHAO Shihu;YUAN Xiuxiao;SONG Yan;ZHONG Yubiao;XUE Qingsheng;Institute of Remote Sensing and Geographic Information System,Beijing Key Lab. of Spatial Information Integration and Its Applications,Peking University;Chinese Academy of Surveying and Mapping;China TOPRS Technology Co.Ltd.,Beijing;Satellite Surveying and Mapping Application Center,NASG;School of Remote Sensing and Information Engineering,Wuhan University;Faculty of Information Engineering,China University of Geosciences,Wuhan;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences;
Accuracy is a key factor in high-resolution remote sensing and photogrammetry.The factors that affect accuracy are imaging system errors and data processing errors.Because of the complexity of aerial camera system errors,this paper focuses on the design of digital aerial camera system,to reduce the system error and provide data procession fundamentally.There are many kinds of digital aerial camera system at present,but lacking a unified physical model,which causes the system to be built in multi-camera and multi-rigid model.Such system is complex,costly,and difficult to describe,and is easily affected by factors such as vibration and temperature,so the installed accuracy can only reach millimeter level.For this reason,this paper proposes the unified physical structure of digital aerial camera,which imitates the theory of out-of-field multi-CCD,in-field multi-CCD,and once-imaging and twice-imaging digital camera systems.Considering this,the spatial-temporal representation of the variable baseline-height ratio is established.From the variable baseline-height ratio,we can link the optomechanical spatial parameters with the elevation accuracy,so that to achieve connection between the surface elevation with opto-mechanical structural parameter;further designing the twice-imaging digital camera prototype system and the wideband limb imaging spectrometer,which provides prototype for transformation from the current multi-rigid,one-time imaging aerial camera to single rigid structure.Our research has laid a theoretical foundation and prototype references for the construction and industrialization of digital aerial system.
【Fund】： 国家重大计划研发项目(2017YFB0503003);; 国家自然科学基金(11174017);; 国家863计划(2007AA12Z111;2006AA12Z119);; 高等学校博士学科点专项科研基金(20130001110046)~~
【CateGory Index】： P237
【CateGory Index】： P237