| GPS/GLONASS/BDS三系统组合定位的定权方法 |
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| 引用本文： | 尚梦云,高 晖,常 青,徐 勇,吴佳鹏,张佳培. GPS/GLONASS/BDS三系统组合定位的定权方法[J]. 太赫兹科学与电子信息学报, 2014, 12(3): 374-379 |
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| 作者姓名： | 尚梦云 高 晖 常 青 徐 勇 吴佳鹏 张佳培 |
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| 作者单位： | School of Electronic and Information Engineering，Beihang University，Beijing 100191，China;CEC Huada Electronic Design Co.,Ltd.，Beijing 100102，China;School of Electronic and Information Engineering，Beihang University，Beijing 100191，China;School of Electronic and Information Engineering，Beihang University，Beijing 100191，China;Space Star Technology Co.,Ltd.，Beijing 100086，China;Space Star Technology Co.,Ltd.，Beijing 100086，China |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)资助项目(2007AA12Z336,2009AA12Z313) |
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| 摘 要： | 为了提高 GPS/GLONASS/BDS三系统组合定位的稳定性和精确度，研究加权最小二乘定位中的定权方法。提出一种结合高度角先验定权和验后方差估计的定权方法，利用多系统兼容接收机实测数据进行仿真验证。结果表明，相较于传统的最小二乘法，该定权方法可以明显改善多系统组合定位的精确度，且具有很好的抗差性能，提高了定位结果的稳定性，可应用于多系统兼容接收机组合定位解算中。
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| 关 键 词： | GPS GLONASS BDS三系统 组合定位 加权最小二乘 验后方差估计 |
| 收稿时间： | 2013-09-03 |
| 修稿时间： | 2013-10-28 |
Weighting methods in GPS/GLONASS/BDS integrated positioning |
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| SHANG Meng-yun,GAO Hui,CHANG Qing,XU Yong,WU Jia-peng and ZHANG Jia-pei. Weighting methods in GPS/GLONASS/BDS integrated positioning[J]. Journal of Terahertz Science and Electronic Information Technology, 2014, 12(3): 374-379 |
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| Authors: | SHANG Meng-yun GAO Hui CHANG Qing XU Yong WU Jia-peng ZHANG Jia-pei |
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| Affiliation: | SHANG Meng-yun, GAO Hui, CHANG Qing, XU Yong, WU Jia-peng, ZHANG Jia-pei (1.School of Electronic and Information Engineering, Beihang University, Beijing 100191, China; 2.CEC Huada Electronic Design Co.,Ltd., Beijing 100102, China; 3.Space Star Technology Co.,Ltd., Beijing 100086, China) |
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| Abstract: | A method of determining appropriate weight for weighted least-square positioning is studied in order to improve the stability and accuracy of GPS/GLONASS/BDS integrated positioning. A method combining priori weighting based on altitude angle and posterior weighting based on variance estimation is proposed. The simulation is performed by using measured data from multi-system compatible receiver. The simulation results show that compared with traditional least-square positioning, the weighting method has a good resistance to poor measure performances and can effectively improve the stability and accuracy of multi-system positioning. Therefore, it can be applied to integrated positioning resolution for multi-system compatible receiver. |
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| Keywords: | GPS/GLONASS/BDS integrated positioning weighted least-square posterior variance estimation |
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