| GPS/BDS单历元基线解算中随机模型的确定 |
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| 引用本文： | 陶庭叶,王志平,蒋俊儒.GPS/BDS单历元基线解算中随机模型的确定[J].大地测量与地球动力学,2015,35(4):649-652. |
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| 作者姓名： | 陶庭叶 王志平 蒋俊儒 |
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| 摘 要： | 相对于以往的经验随机模型和高度角模型,提出采用Helmert验后方差估计来确定GPS/BDS组合系统单历元基线解算过程中来自不同系统、不同类型观测值的权阵。数据处理结果表明,Helmert方差估计模型更合理地确定了组合系统相对定位的随机模型,有效提高了单历元模糊度搜索的成功率及基线解算的精度和可靠性。
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| 关 键 词： | GPS/BDS 单历元 基线解算 随机模型 Helmert方差估计 |
The Method for Determining the Stochastic Model of Single Epoch Relative Positioning of Combined GPS and BDS |
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| TAO Tingye,WANG Zhiping,JIANG Junru.The Method for Determining the Stochastic Model of Single Epoch Relative Positioning of Combined GPS and BDS[J].Journal of Geodesy and Geodynamics,2015,35(4):649-652. |
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| Authors: | TAO Tingye WANG Zhiping JIANG Junru |
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| Abstract: | n order to resolve the problem of how to determine the weight matrix of observations that are of different kinds and come from different systems, the empirical, satellite elevation, and Helmert variance estimation models are analyzed and studied. The data processing results show that the stochastic model of combined system relative positioning is best determined when the Helmert variance estimation model is applied. Further, the success rate of single epoch ambiguity searching and both the precision and reliability of baseline solution is improved. |
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| Keywords: | GPS/BDS single epoch baseline solution stochastic model Helmert variance estimation |
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