| 组合码和相位观测值在线解双差模糊度的算法 |
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| 引用本文： | 龚涛.组合码和相位观测值在线解双差模糊度的算法[J].测绘学院学报,2000,17(2):86-90. |
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| 作者姓名： | 龚涛 |
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| 作者单位： | 西南交通大学测量工程系!四川成都610031 |
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| 基金项目： | 国家自然科学基金资助项目!( 4 97710 62 ) |
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| 摘 要： | 如何在线精确地求解整周模糊度，是ＧＰＳ高精度动态相对定位的关键问题。在线解算取决于很多因素：基线长度、数据处理方法、接收机的性能（如双频还是单频）以及抗ＡＳ和ＳＡ的能力等。现代双频ＧＰＳ接收机能获得载波相位和Ｌ１、Ｌ２频道上的精度伪距观测值，组合这４个观测值可进行单历元整周模糊度解算。文中对组合码和相位观测值在线解整周度的算法进行了试验和分析，得出了很有实用意义的结合。
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| 关 键 词： | 模糊度 在线解算 宽巷 组合码 相位观测值 GPS |
GPS Double Difference Ambiguity Online Resolution by Combined Phase and Code Observable |
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| GONG Tao.GPS Double Difference Ambiguity Online Resolution by Combined Phase and Code Observable[J].Journal of Institute of Surveying and Mapping,2000,17(2):86-90. |
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| Authors: | GONG Tao |
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| Abstract: | In spite of static relative positioning or kinematic relative positioning, the success of baseline resolution is closely related to the reliable fixing of integer ambiguity of carrier phase measurements. The observation time varies considerably, depending on many factors such as the length of baselines, data processing strategies and receiver capabilities,e.g. single frequency or dual frequency, pseudo range measurement accuracy, and the ability of coping with anti spoofing (AS) and selective availability (SA). For today's low noise code /phase dual frequency receivers can offer accurate pseudo ranges on both carrier frequencies. With the help of combination of code and phase measurements, this paper takes the advantages of wide lane ambiguity can be easily determined by dual frequency, and then be used for the improvement of ambiguity resolution on both L 1 and L 2 frequency. Data from different ranges of baseline are used to test how the method works and some useful conclusions are summarized. |
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| Keywords: | ambiguity online resolution wide lane combination of code phase measurements |
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