POS辅助空中三角测量技术现状及关键问题研究.pdf

Subject: Research to Technical Stateand Key Problems of POS Supported Aerial TriangulationSpecialty:Photogrammetry and Remote SensingName:ZhaoShuai(Signature)Instructor:ChenXiaoNing(Signature)ABSTRACTIntegrated Position Orientation System called POS is combined by Global Positioning System (GPS)and Inertial Navigation System (INS). POS can use Differential GPS technology and Inertial Measurement Unit obtained position and posture of instrument during the aerial photography. Then, through rigorous data processing, the instantaneous exterior orientation elements of aerial photograph can be gained. This newly operation mode can free traditional photogrammetry from the dependent on large number of Ground Control Points (GCPs). Then can improve operational efficiency and bring a great quantity of economic dissertationmainly analysis thetechnical state and some key problems during the productive processinvolved in POSSupported Aerial Triangulation. Thenaimed at solve these problems, several experimentalresearchesassociatedwith practical productionprojectwere made. These researches consist of following aspects:1. Resolve the key problems of POS data . Solve the key issues of the POSSupported Aerial Triangulationflow based on . Carry outexperimentalresearchof the distributionscheme for image control points, get the conclusionthat 9 points and 15 points is the best choice to layout the control points when the block have 16 strips and 38 baselines with the 1:2000 final chart an optimal planin the case of . Comprehensive comparative experimentationof the current mainstream Aerial Triangulation methodfrom many aspects of accuracy, efficiency and cost, get conclusionthat the POS we used do not play its full potential in the Supported Aerial Triangulationprocess, and the angle element that acquired from POS do not play