GNSS整周模糊度概率特性  

Probabilistic properties of GNSS integer ambiguity

作　　者：王贵文[1] 王泽民[1] 殷海涛[2] 杨晓芸[3] 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]西南交通大学测量工程系,四川成都610031 [3]广西工学院土建系,广西柳州545006

出　　处：《辽宁工程技术大学学报（自然科学版）》2007年第4期497-500,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：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))

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。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.

关 键 词：GNSS 归整域 成功率 LAMBDA TCAR/MCAR 

分 类 号：P235[天文地球—摄影测量与遥感]