| CORS基站周跳探测与修复方法 |
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| 引用本文： | 王胜利,王庆,潘树国,余学祥.CORS基站周跳探测与修复方法[J].中国惯性技术学报,2011(5). |
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| 作者姓名： | 王胜利 王庆 潘树国 余学祥 |
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| 作者单位： | 东南大学仪器科学与工程学院;安徽理工大学测绘学院; |
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| 基金项目： | 国家科技支撑计划重点项目课题(2008BAJ08B15) |
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| 摘 要： | 针对在CORS系统初始化后,周跳的出现将严重影响移动用户定位精度,CORS网中基站坐标已知,可精确预报对流层、电离层等系统误差,以及整周模糊度确定的特点,分析了周跳对双差模型的影响,通过分析普通卫星产生的周跳仅对一个双差观测方程产生影响,可以作为粗差,参考卫星的周跳会引入所有观测方程,从而对模型产生系统性误差,进而提出了使用附有系统参数的抗差估计方法,对CORS基站中的载波观测值进行整体平差,根据改正数V判断普通卫星的周跳,根据系统参数x2判断参考卫星的周跳。实验表明,该方法能将所有可见卫星进行整体的周跳探测,并且能实现高度角低于10°时的周跳探测和修复。
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| 关 键 词： | CORS网 抗差估计 周跳 探测与修复 |
New cycle-slip detection and repair method for CORS network |
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| WANG Sheng-li,WANG Qing,PAN Shu-guo,YU Xue-xiang.New cycle-slip detection and repair method for CORS network[J].Journal of Chinese Inertial Technology,2011(5). |
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| Authors: | WANG Sheng-li WANG Qing PAN Shu-guo YU Xue-xiang |
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| Institution: | WANG Sheng-li1,2,WANG Qing1,PAN Shu-guo1,YU Xue-xiang2(1.School of Instrument Science and Engineering,Southeast University,Nanjing 210096,China,(2.School of Geodesy and Geomatics,Anhui University of Science and Technology,Huainan 232001,China) |
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| Abstract: | In view that the cycle slip,occurred after CORS system initialization,would significantly influence the positioning accuracy of mobile subscriber,this paper presents an cycle-slip detection and repair algorithm based on robust estimation.It is based on the characteristics of CORS network,such as the true coordinates of the reference stations are known,the systemic errors(for examples,the tropospheric and ionospheric effects) can be accurately predicted,and the integer ambiguity after initializing is known.T... |
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| Keywords: | CORS net robust estimation cycle slip detection and repair |
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