基于长短基线法的整周模糊度解算算法  

Integer Ambiguity Resolution Algorithm Based on Different Baseline Method

作　　者：张晟歌 程乃平 倪淑燕 

机构地区：[1]航天工程大学光电装备系,北京

出　　处：《图像与信号处理》2018年第4期191-199,共9页Journal of Image and Signal Processing

摘　　要：利用载波相位观测值可以大大提高导航定位精度,但整周模糊度的存在会严重影响结果准确性。本文分析了LAMBDA算法解算整周模糊度的优缺点。针对其构建搜索域导致的搜索时间较长的问题。提出了一种基于长短基线结合的整周模糊度解算算法。通过对比LAMBDA算法与长短基线法解算精确度以及解算速度进行分析对比。通过仿真实验可以看出,LAMBDA法的解算速度相对于长短基线法来说较慢,但是在卫星与接收天线之间呈一定角度时,长短基线法会会大大的提高模糊度解算的误差。本文还粗略地分析了长短基线法引起误差的原因。Carrier phase observation can greatly improve the accuracy of navigation and positioning, but the existence of ambiguity will seriously affect the accuracy of the results. This paper analyzes the ad-vantages and disadvantages of LAMBDA algorithm for integer ambiguity resolution. The problem of constructing search domain leads to long search time. An algorithm of integer ambiguity resolution based on long baseline and short baseline is proposed. By comparing the LAMBDA algorithm with the long baseline method, the accuracy and speed of calculation are analyzed and compared. The simulation results show that the LAMBDA method is slower than the long-short baseline method, but when the angle between the satellite and the receiving antenna is certain, the long-short baseline method will greatly improve the ambiguity resolution error. The causes of errors caused by the long baseline method are also roughly analyzed.

关 键 词：载波相位整周模糊度 LAMBDA算法 长短基线算法 

分 类 号：P2[天文地球—测绘科学与技术]