GPS航测中的模糊度解算和摄影中心确定

The approach of ambiguity resolution and the determination of projection center in GPS-aided aero-triangulation

GPS航空摄影测量需要在飞行的飞机上进行动态定位 ,高精度动态定位需应用载波相位观测值 ,并正确确定整周模糊度。本文从严格的矩阵理论出发给出了简单易行的降相关算法。GPS航空摄影测量另一个重要计算是将GPS测量结果内插出每次曝光时的GPS天线位置。简单的数学内插不能满足精度要求 ,应当顾及飞机飞行时的动力学情况 ,即考虑飞机的状态向量 。

In GPS\|aided aero\|triangulation,the approach of ambiguity resolution and the determination of projection center are the two key important works.This paper introduces a method of calculating carrier phase ambiguity.In aero\|triangulation,the plane is flying in dynamically.So the site of air\|borne GPS antenna at the exposure instant cannot be interpolated by lineal method,but the KALMAN filtering works well.