| GPS／BeiDou 组合单点定位的定权与结果分析 |
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| 引用本文： | 潘林,蔡昌盛,戴吾蛟,高晓.GPS／BeiDou 组合单点定位的定权与结果分析[J].全球定位系统,2013(6):12-16. |
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| 作者姓名： | 潘林 蔡昌盛 戴吾蛟 高晓 |
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| 作者单位： | 中南大学测绘与遥感科学系,湖南长沙410083 |
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| 基金项目： | 国家自然科学基金（批准号：41004011） |
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| 摘 要： | 利用Helmert方差分量估计方法为GPS/BeiDou组合单点定位不同系统观测值定权，获得了合理的权值。分析了开阔环境和遮挡环境两种情况下的动态GPS/BeiDou组合单点定位的精度。结果表明：在静态观测和动态观测中，组合单点定位与单独G PS单点定位相比精度有显著提高。
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| 关 键 词： | GPS BeiDou Helmert方差分量估计 单点定位 定位精度 |
Weight Determination and Accuracy Analysis of Combined GPS/BeiDou Single Point Positioning |
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| PAN Lin,CAI Changsheng,DAI Wujiao,GAO Xiao.Weight Determination and Accuracy Analysis of Combined GPS/BeiDou Single Point Positioning[J].Gnss World of China,2013(6):12-16. |
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| Authors: | PAN Lin CAI Changsheng DAI Wujiao GAO Xiao |
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| Institution: | (Department of Geomatics and Remote Sensing Science, Central South University, Changsha Hunan 410083, China) |
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| Abstract: | The Variance Component Estimation （VCE） method is used to determine the weight of observations from different satellite systems in the combined GPS/BeiDou single point positioning （SPP） .A proper observation weight ratio between GPS and BeiDou pseud-orange measurements is acquired .The positioning accuracy of combined GPS/BeiDou SPP is analyzed using both static data and kinematic data collected under open sky and blocked envi-ronment .The results indicate that the combined GPS/BeiDou SPP can significantly improve the positioning accuracy for both the static and kinematic tests over GPS-only SPP . |
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| Keywords: | GPS BeiDou Variance Component Estimation single point positioning positioning accuracy |
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