| Improvement of GPS ambiguity resolution using prior height information. Part Ⅱ: The method of using quasi observation |
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| 引用本文： | 朱建军.Improvement of GPS ambiguity resolution using prior height information. Part Ⅱ: The method of using quasi observation[J].中南工业大学学报(英文版),2002,9(4). |
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| 作者姓名： | 朱建军 |
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| 作者单位： | School of Info Physics and Geomatics Engineering，Central South University，Centre for Research in Geomatics，Laval University，Canada Changsha 410083，China |
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| 基金项目： | CanadianGEOIDEProjectENV14 #，SRFforROCS，SEM，TheDoctoralFoundationofMinistryofEducation，China(No .2 0 0 0 5 3315 ) |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅｍｅｔｈｏｄｏｆｕｓｉｎｇｈｅｉｇｈｔｖａｌｉｄａｔｉｏｎ ,ｔｈｅｐｒｉｏｒｈｅｉｇｈｔｉｎｆｏｒｍａｔｉｏｎｉｓｕｓｅｄｏｎｌｙｔｏｄｅｃｒｅａｓｅｔｈｅｓｅａｒｃｈｖｏｌｕｍｅｏｆｔｈｅｉｎｔｅｇｅｒａｍｂｉｇｕｉ
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Improvement of GPS ambiguity resolution using prior height information. Part Ⅱ: The method of using quasi observation |
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| Rock Santerre.Improvement of GPS ambiguity resolution using prior height information. Part Ⅱ: The method of using quasi observation[J].Journal of Central South University of Technology,2002,9(4). |
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| Authors: | Rock Santerre |
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| Affiliation: | School of Info-Physics and Geomatics Engineering, Central South University, Changsha 410083, China Centre for Research in Geomatics, Laval University, Canada |
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| Abstract: | This paper deals with the method of using quasi observation. In the paper a simple algorithm is developed for the adjustment computation with quasi observation at first. And then the ability of quasi observation to improve ambiguity search technique is studied in detail. The robustness of the method is also discussed. A method to determine the weight of quasi observation is proposed. The results show that a prior height can be taken as a quasi observation and used together with GPS observations. It can strengthen residual tests, especially in situation where there are fewer satellites in the sky. It also can change structure of incorrect solutions, which will theoretically make less incorrect solutions left in search space. At last the field tests are carried out to show that the proposed method is effective. The success rate of ambiguity resolution in the four field tests is improved significantly. |
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| Keywords: | ambiquity resolution algorithm with quasi observation robustness |
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