| GNSS整周模糊度概率特性 |
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| 引用本文： | 王贵文,王泽民,殷海涛,杨晓芸. GNSS整周模糊度概率特性[J]. 辽宁工程技术大学学报(自然科学版), 2007, 26(4): 497-500 |
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| 作者姓名： | 王贵文 王泽民 殷海涛 杨晓芸 |
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| 作者单位： | 武汉大学,测绘学院,湖北,武汉,430079;西南交通大学,测量工程系,四川,成都,610031;广西工学院,土建系,广西,柳州,545006 |
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| 基金项目： | 国家自然科学基金资助项目(49904001)，国土资源部基金资助项目(031709)) |
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| 摘 要： | 为了描述GNSS定位结果的可靠性和整周模糊度的概率分布,采用理论分析和实验的方法,推导了各种整周模糊度取整方法的成功率,分析了针对现代化后的GPS和Galileo系统的TCAR/MCAR方法。实验验证了LAMBDA算法能够较大提高模糊度取整成功率。研究结果表明,LAMBDA算法是一种比较理想的模糊度解算方法,TCAR/MCAR是LAMBDA算法在多频情况下的特例。研究结论有助于提高GNSS载波相位定位的可靠性。
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| 关 键 词： | GNSS 归整域 成功率 LAMBDA TCAR/MCAR |
| 文章编号： | 1008-0562（2007）04-0497-04 |
| 修稿时间： | 2006-01-12 |
Probabilistic properties of GNSS integer ambiguity |
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| WANG Gui-wen,WANG Ze-min,YIN Hai-tao,YANG Xiao-yun. Probabilistic properties of GNSS integer ambiguity[J]. Journal of Liaoning Technical University (Natural Science Edition), 2007, 26(4): 497-500 |
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| Authors: | WANG Gui-wen WANG Ze-min YIN Hai-tao YANG Xiao-yun |
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| Affiliation: | 1. School of Geodesy and Geomatics,Wuhan University, Wuhan 430079,China; 2. Department of Surveying Engineering, Southwest Jiaotong University, Chendu 61003i,China; 3 Department of Civil Engineering, Guangxi University of Technology, Liuzhou 545006,China |
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| Abstract: | In order to describe the reliability of GNSS positioning result and probability distribution of ambiguity,successful rate of solving ambiguity with various methods are deduced based on theories and practice and the TCAR/MCAR method used in the GPS and Galileo which have multifold frequencies after their being modernized in future are analyzed.It is indicated that LAMBDA algorithm can be used to dramatically improve successful rate of solving ambiguity and TCAR/MCAR method is just a special form of LAMBDA under multi-frequency.With the view of probability theory,the solution of integer ambiguity can be newly treated.The research result is also useful to improve the reliability of GNSS positioning result in practice. |
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| Keywords: | GNSS pull-in region success rate LAMBDA TCAR/MCAR |
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