| Helmert验后方差估计在GPS/GLONASS组合单点定位中的应用 |
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| 引用本文： | 周海涛,袁新英,罗力.Helmert验后方差估计在GPS/GLONASS组合单点定位中的应用[J].测绘与空间地理信息,2015(4):153-155. |
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| 作者姓名： | 周海涛 袁新英 罗力 |
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| 作者单位： | 1. 辽宁省测绘产品质量监督检验站,辽宁沈阳,110034;2. 辽宁省测绘地理信息局,辽宁沈阳,110000;3. 辽宁省测绘地理信息局网络中心,辽宁沈阳,110034 |
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| 摘 要： | 在给出组合GPS/GLONASS单点定位原理后,提出了利用Helmert验后方差估计法对GPS/GLONASS观测值定权的方法,并结合应用实例,通过对比分析说明该方法的可行性,实践表明该方法定权比采用固定权或经验定权更具有合理性。
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| 关 键 词： | Helmert 验后估计 单点定位 GPS/GLONASS |
Application of Helmert Posterior Variance Component Estimation Method in GPS/GLONASS Single-Point Positioning |
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| ZHOU Hai-tao,YUAN Xin-ying,LUO Li.Application of Helmert Posterior Variance Component Estimation Method in GPS/GLONASS Single-Point Positioning[J].Geomatics & Spatial Information Technology,2015(4):153-155. |
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| Authors: | ZHOU Hai-tao YUAN Xin-ying LUO Li |
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| Abstract: | In the paper, a proper weighting scheme is developed to obtain precise position solutions from the integration of GPS and GLONASS observations.A Helmert method is used to estimate the posterior variance components, which are applied for deciding the weight of GPS and GLONASS observations.The numerical results indicate that the posterior variance component estimation method is more appropriate than the weighting schemes based on priori measurement variances for combined GPS and GLONASS single-point positioning. |
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| Keywords: | Helmert posterior estimation single-point positioning GPS/GLONASS |
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