| 一种适于Compass周跳探测的三频数据优化组合 |
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| 引用本文： | 孙保琪,欧吉坤,盛传贞,刘吉华.一种适于Compass周跳探测的三频数据优化组合[J].武汉大学学报(信息科学版),2010(10). |
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| 作者姓名： | 孙保琪 欧吉坤 盛传贞 刘吉华 |
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| 作者单位： | 中国科学院测量与地球物理研究所动力大地测量重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家自然科学基金资助项目(40874009); 国家863计划资助项目(2007AA12Z305,2006AA12Z322); 中国科学院研究生科技创新与社会实践专项资金资助项目 |
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| 摘 要： | 根据多频数据组合原理,推导了组合观测值电离层比例因子与噪声比例因子的关系,分析了Compass码和相位的多种可能组合,从中选取3种线性无关的优化组合作为周跳检验量。所选检验量保持了周跳的整数特性,便于准确估计与修复周跳。利用Compass-M1实测数据进行的实验表明,基于优化组合可以探测出1周以上的所有周跳,在缺失历元较少和无电离层异常时可以准确估计与修复基本频率的周跳。
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| 关 键 词： | Compass GNSS 卫星导航 多频组合 周跳探测与修复 |
Optimal Multi-frequency Data Combination for Compass Cycle Slip Detection and Reparation |
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| SUN Baoqi, OU Jikun SHENG Chuanzhen, LIU Jihua.Optimal Multi-frequency Data Combination for Compass Cycle Slip Detection and Reparation[J].Geomatics and Information Science of Wuhan University,2010(10). |
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| Authors: | SUN Baoqi OU Jikun SHENG Chuanzhen LIU Jihua |
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| Institution: | SUN Baoqi1,2 OU Jikun1 SHENG Chuanzhen1,2 LIU Jihua1,2(1 Key Laboratory of Dynamical Geodesy,Institute of Geodesy and Geophysics,CAS,340 Xudong Street,Wuhan 430077,China)(2 Graduate University of the Chinese Academy of Sciences,19 Yuquan Road,Beijing 100049,China) |
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| Abstract: | Based on multi-frequency data combination theory,the relation between ionosphere scale factor and noise scale factor of combined observation was derived.Lots of possible combinations of Compass codes and carrier phases were analyzed,from which three linear independent optimal combinations were selected as cycle slip test quantities.These quantities keep cycle slips as integers and are helpful to accurately estimate and repair them.Experiment based on real Compass data shows that,by using the selected optima... |
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| Keywords: | compass GNSS cycle slip multi-frequency data combination |
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