| 一种短基线GNSS的三频模糊度解算(TCAR)方法 |
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| 引用本文： | 范建军,王飞雪.一种短基线GNSS的三频模糊度解算(TCAR)方法[J].测绘学报,2007,36(1):43-49. |
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| 作者姓名： | 范建军 王飞雪 |
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| 作者单位： | 国防科技大学,电子科学与工程学院,卫星导航研发中心,湖南,长沙,410073;国防科技大学,电子科学与工程学院,卫星导航研发中心,湖南,长沙,410073 |
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| 基金项目： | 新世纪优秀人才支持计划(NCET-04-0995) |
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| 摘 要： | TCAR或综合TCAR是GNSS中常用的快速确定三频模糊度的方法,其原理简单,计算方便。根据不同的噪声背景和多径条件,给出综合TCAR单历元实时解算模糊度的误差分析及仿真结果。针对模糊度估计成功概率不高的情况,结合双频相关法(DUFCOM),并根据综合TCAR的特点,对综合TCAR进行改进。最后,将此方法与基于整数最小二乘准则搜索的LAMBDA方法进行比较。仿真结果表明,利用该方法成功搜索到正确模糊度值的概率与LAMBDA方法相当,但降低计算量,有效提高用综合TCAR单历元实时解算模糊度的可靠性。
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| 关 键 词： | 综合TCAR 多路径 成功概率 模糊度搜索 LAMBDA |
| 文章编号： | 1001-1595（2007）01-0043-07 |
| 修稿时间： | 2006-05-082006-08-28 |
A Method for GNSS Three Frequency Ambiguity Resolution Based on Short Baselines |
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| FAN Jian-jun,WANG Fei-xue.A Method for GNSS Three Frequency Ambiguity Resolution Based on Short Baselines[J].Acta Geodaetica et Cartographica Sinica,2007,36(1):43-49. |
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| Authors: | FAN Jian-jun WANG Fei-xue |
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| Abstract: | TCAR or integrated TCAR is commonly used for fast three frequency ambiguity resolution.It is simple in theory and convenient in computation.In the terms of different noise and multipath,error analysis and simulation are given for the integrated TCAR in real time using single epoch data.It is found that the estimation has low reliability.An modified algorithm for integrated TCAR combined with dual frequency carrier phase correlation method(DUFCOM) is proposed,and it is compared with the LAMBDA based on integer least square.Simulation result shows that the proposed algorithm exhibits good performed well and has a low complexity. |
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| Keywords: | integrated TCAR multipath success rate ambiguity search the least-square ambiguity decorrelation adjustment |
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