摘要
初始整周模糊度的求解是利用 GPS载波相位进行测量时的关键问题。本文提出了一种初始整周模糊度在航快速解算方法 ,该方法由低阶 Kalman滤波器和基线约束条件来实现 ,利用 Kalman滤波器动态递推的特性可以实现模糊度的动态解算 ,由基线约束条件可以有效地剔除不合理模糊度组合。文中对所提出的算法进行了理论推导 ,并进行了计算机仿真和实测数据分析。仿真和实验结果表明 ,该算法计算量小 ,快速准确 。
The key of measurement using GPS carrier phase is the determination of integer ambiguity. An algorithm for calculating ambiguity on the fly is presented. The method is realized on low rank Kalman filtering and base line constraint equation. Integer ambiguity resolution on the fly is obtained with Kalman filtering and unreasonable ambiguities are effectively rejected. The principle is deduced in detail, computer simulation and real survey data calculation are carried out. Result shows that the method can well be used to do dynamic ambiguity resolution, with characteristic of small calculation, exactness and rapidity.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2001年第5期424-427,共4页
Journal of Nanjing University of Aeronautics & Astronautics
