摘要
为了快速且准确地固定整周模糊度,针对LAMBDA算法存在整周模糊度搜索范围过广、搜索效率低等问题,提出一种基于测量精度约束的模糊度搜索算法。该算法在最小二乘问题得到最佳加权的情况下,以标准差分进化(DE)算法为基础、载波相位测量精度为约束条件进行模糊度固定解的检验。该算法解决了不同卫星高度角产生的影响,在解算三维整周模糊度时能够达到99%的解算成功率。相比于MLAMBDA、DE、自适应加权的差分进化(AWDE)算法,该算法进一步提高了模糊度的解算效率和成功率。
In order to fix the integer ambiguity quickly and accurately,this paper proposed a new ambiguity search algorithm based on measurement accuracy constraints to solve the problems of the LAMBDA algorithm,such as the wide search range of the integer ambiguity and the low search efficiency.When the least squares problem got optimally weighted,the algorithm took the carrier phase measurement accuracy as the constraint condition to test the fixed ambiguity solution on the basis of the stan-dard differential evolution(DE)algorithm.This algorithm solved the influence of different satellite altitude angles,and could achieve 99%success rate when solving 3D integer ambiguity.Compared with the MLAMBDA algorithm,the standard DE algorithm and the adaptive weighted differential evolution(AWDE)algorithm,the proposed algorithm further improves the efficiency and success rate of ambiguity resolution.
作者
鲜炜
杨杰
吴绩伟
Xian Wei;Yang Jie;Wu Jiwei(Hubei Provincial Key Laboratory of Broadband Wireless Communication&Sensor Networks,School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China;Shanghai International Port(Group)Co.,Ltd.,Shanghai 200135,China)
出处
《计算机应用研究》
CSCD
北大核心
2023年第7期2053-2059,共7页
Application Research of Computers
基金
国家重点研发计划资助项目(2020YFB1710800)
国家自然科学基金资助项目(51879211)。
关键词
整周模糊度
测量精度约束
模糊度搜索算法
最小二乘
标准差分进化算法
integer ambiguity
measurement accuracy constraints
ambiguity search algorithm
least square
standard diffe-rential evolution algorithm
