| BDS-3多频信号最优线性组合及特性分析 |
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| 引用本文： | 李毓照,杨维芳,闫浩文,王世杰,杨国林,苏小宁.BDS-3多频信号最优线性组合及特性分析[J].大地测量与地球动力学,2022,42(6):612-615. |
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| 作者姓名： | 李毓照 杨维芳 闫浩文 王世杰 杨国林 苏小宁 |
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| 作者单位： | 兰州交通大学测绘与地理信息学院,兰州市安宁西路 88 号,730070;地理国情监测技术应用国家地方联合工程研究中心,兰州市安宁西路 88 号,730070;甘肃省地理国情监测工程实验室,兰州市安宁西路 88 号,730070 |
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| 基金项目： | 国家自然科学基金;兰州交通大学青年科学基金;兰州交通大学优秀平台项目;甘肃省科技计划 |
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| 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。
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| 关 键 词： | BDS-3 多频信号 线性组合 模糊聚类分析 |
The Optimal Linear Combination and Characteristic Analysis of BDS-3 Multi-Frequency Signals |
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| LI Yuzhao,YANG Weifang,YAN Haowen,WANG Shijie,YANG Guolin,SU Xiaoning.The Optimal Linear Combination and Characteristic Analysis of BDS-3 Multi-Frequency Signals[J].Journal of Geodesy and Geodynamics,2022,42(6):612-615. |
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| Authors: | LI Yuzhao YANG Weifang YAN Haowen WANG Shijie YANG Guolin SU Xiaoning |
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| Abstract: | 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. |
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| Keywords: | BDS-3 multi-frequency signal linear combination fuzzy clustering analysis |
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