附加失败率检验的长距离参考站网模糊度固定  

Ambiguity Resolution for Long-Range Reference Station Network with Additional Failure Probability Test

作　　者：张明[1] 刘晖[1] 冯彦同[2] 周鹏[1] 李伟 

机构地区：[1]武汉大学卫星导航定位技术研究中心,武汉430079 [2]山东省国土测绘院,济南250102 [3]广西壮族自治区遥感信息测绘院,南宁530023

出　　处：《复杂系统与复杂性科学》2016年第3期103-107,共5页Complex Systems and Complexity Science

基　　金：国科发高资助项目([2012]38);国家高技术研究发展计划(863计划)资助项目(2012AA12A209);国家高技术研究发展计划(863计划)资助项目(2007AA12Z309)

摘　　要：对于长距离参考站网模糊度固定而言,Ratio检验和三角形模糊度闭合差(Triangle Ambiguities Closure Error,TACE)检验是最常用的两种模糊度检验手段,一般认为通过这两种检验后即可将模糊度固定。但事实上,在此情况下,模糊度被错误固定的情况经常出现。为此,本文提出了一种网解失败率(Network Failure Probability,NFP)检验方法,使用该方法可以计算出通过Ratio检验和TACE检验前提下参考站网模糊度固定的失败率。实验表明,当参考站数量小于等于8时,附加NFP检验后模糊度固定的正确率最高提高了25.4%,平均提高了8.1%,初始化成功率平均提高了4.3%。Ratio and triangle ambiguities closure error （TACE） tests are two primary validation methods used in ambiguity resolution for long‐range reference station network .once they are pas‐sed ,it is considered the ambiguities could be fixed to integers with a high confidence .However , it is usually found that the ambiguities were wrongly fixed even both the two tests above are pas‐sed .To improve the correct rate of ambiguity solutions ,we proposed a network failure probabili‐ty （NFP） test ,the failure probability of the reference station network is calculated under the con‐ditions of that the Ratio test and TACE test have been passed .The experiment result shows that ,with additional NFP test ,the average correct rate of integer ambiguity solutions is raised up by 8.1% with a peak at 23.5% ,the average initialization speed is increased by 5.6% as well when the number of the reference stations is smaller than 8 .

关 键 词：失败率 长距离 参考站网 模糊度固定 模糊度检验 

分 类 号：N94[自然科学总论—系统科学]