A Rigorous Positioning Equation and It''s Error Analysis and Precision Evaluation for Integrated Positioning System of Airborne GPS, INS and Laser Scanning Ranging
机载GPS、姿态和激光扫描测距集成定位系统的精确定位方程、误差分析与精度评估

Direct space ground positioning system which is composed of Global Positioning System (GPS), attitude measurement (i.e. inertial navigation system, INS) and laser scanning ranging is a new positioning technique developed in recent years, the system is one of the new methods which obtain geometric information of the terrain and generate digital elevation model for quantily of three dimensional remote sensing. This paper gives rigorous positioning equation and error transfer equation of air to ground positioning for airborne and space borne remote sensing. Error analysis of the system and precision evaluation based on the obtained equations for line scanning and circle scanning are given. The simulation computation indicates that the results of this paper have importance to practical application.