| LAMBDA算法的部分模糊度固定及性能分析 |
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| 引用本文： | 赵兴旺,王庆,潘树国,邓健.LAMBDA算法的部分模糊度固定及性能分析[J].中国惯性技术学报,2010,18(6). |
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| 作者姓名： | 赵兴旺 王庆 潘树国 邓健 |
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| 作者单位： | 东南大学仪器科学与工程学院; |
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| 基金项目： | "十一五"国家科技支撑计划重点项目 |
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| 摘 要： | 模糊度解的可靠性对GPS精密定位至关重要.针对GPS定位中存在的残余误差及未改正偏差降低模糊度固定成功率的问题,在LAMBDA算法的基础上推导了不完全模糊度固定的数学模型,提出了以模糊度浮点解方差为依据、以模糊度固定成功率为约束条件的最优子集选取方法.对选取的模糊度子集进行LAMBDA部分固定测试分析.结果表明,与传统LAMBDA模糊度固定法比较,部分模糊度固定不仅减小了模糊度搜索空间,缓解了计算负担,而且提高了模糊度解的可靠性.
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| 关 键 词： | LAMBDA算法 模糊度成功率 模糊度子集 部分搜索 |
Partial ambiguity fixing algorithm based on LAMBDA and its performance analysis |
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| ZHAO Xing-wang,WANG Qing,PAN Shu-guo,Deng Jian.Partial ambiguity fixing algorithm based on LAMBDA and its performance analysis[J].Journal of Chinese Inertial Technology,2010,18(6). |
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| Authors: | ZHAO Xing-wang WANG Qing PAN Shu-guo Deng Jian |
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| Institution: | ZHAO Xing-wang,WANG Qing,PAN Shu-guo,Deng Jian(School of Instrument Science and Engineering,Southeast University,Nanjing 210096,China) |
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| Abstract: | The reliability of the ambiguity solution is essential to GPS precision positioning.Due to the presence of the multipath or unaccounted atmospheric delays in GPS positioning,the success rates of fixing ambiguity may be declined.To solve this problem,a partial ambiguity fixing(PAF) model is put forward based on LAMBDA algorithm.It gives priority to the most likely fixed ambiguities,and tries to improve the success rates by fixing partial ambiguities instead of total ambiguities.The subset is selected by the ... |
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| Keywords: | LAMBDA algorithm ambiguity success-rate ambiguity subset partial searching |
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