BDS-3多频信号最优线性组合及特性分析  

The Optimal Linear Combination and Characteristic Analysis of BDS-3 Multi-Frequency Signals

作　　者：李毓照 杨维芳 闫浩文 王世杰 杨国林 苏小宁 LI Yuzhao;YANG Weifang;YAN Haowen;WANG Shijie;YANG Guolin;SU Xiaoning(Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou 730070,China;National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China)

机构地区：[1]兰州交通大学测绘与地理信息学院,兰州市730070 [2]地理国情监测技术应用国家地方联合工程研究中心,兰州市730070 [3]甘肃省地理国情监测工程实验室,兰州市730070

出　　处：《大地测量与地球动力学》2022年第6期612-615,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41861061,42061076);甘肃省科技计划(21JR7RA318);兰州交通大学青年科学基金(2020055);兰州交通大学优秀平台项目(201806)。

摘　　要：围绕BDS-3多频模糊度解算中的最优组合观测量选取问题,采用模糊聚类分析法分别实现不同基线长度下三频、四频及五频最优组合观测量的选取及特性分析。结果表明,随着频率数的增加,高质量线性组合数目急剧增多;相比于三频、四频,五频更有利于形成总噪声水平小的组合观测量、长基线模糊度的单历元快速固定及实现实时精密定位。This paper focuses on the selection of the optimal combination of observations in the BDS-3 multi-frequency ambiguity resolution,and uses fuzzy clustering analysis to realize the selection of the optimal combination of three-frequency,four-frequency and five-frequency observations under different baseline lengths.The results show that as the number of frequencies increases,the number of high-quality linear combinations increases sharply;at the same time,it is more conducive to the formation of combined observations with a smaller total noise level,and it is more to the rapid fixation of the single epoch of the long baseline ambiguity,which is conducive to realization real-time precise positioning.

关 键 词：BDS-3 多频信号 线性组合 模糊聚类分析 

分 类 号：P228[天文地球—大地测量学与测量工程]