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北斗卫星导航系统双差动力法精密定轨及其精度分析
针对GEO卫星切向轨道分量与双差模糊度强相关的问题,对经典双差动力法进行了改进,提出联合使用载波相位和相位平滑伪距实现北斗系统精密定轨,并从理论上分析了以上处理策略的可行性及对模糊度固定的影响,然后结合北斗系统精密定轨特点,推导给出了利用QIF方法实现北斗卫星双差模糊度固定的基本原理,实测数据分析表明:联合载波相位和相位平滑伪距,既可降低相关性,又可兼顾精度,定轨效果优于经典双差动力法;利用QIF方法能够取得一定的模糊度固定效果,但受观测条件限制,北斗卫星双差模糊度固定成功率整体不高,双差模糊度固定之后对轨道的改进作用有限。...
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Published in: | Ce hui xue bao 2016-02, Vol.45 (2), p.131-139 |
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creator | 刘伟平 郝金明 田英国 于合理 张康 |
description | 针对GEO卫星切向轨道分量与双差模糊度强相关的问题,对经典双差动力法进行了改进,提出联合使用载波相位和相位平滑伪距实现北斗系统精密定轨,并从理论上分析了以上处理策略的可行性及对模糊度固定的影响,然后结合北斗系统精密定轨特点,推导给出了利用QIF方法实现北斗卫星双差模糊度固定的基本原理,实测数据分析表明:联合载波相位和相位平滑伪距,既可降低相关性,又可兼顾精度,定轨效果优于经典双差动力法;利用QIF方法能够取得一定的模糊度固定效果,但受观测条件限制,北斗卫星双差模糊度固定成功率整体不高,双差模糊度固定之后对轨道的改进作用有限。 |
doi_str_mv | 10.11947/j.AGCS.2016.20150190 |
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subjects | Ambiguity BeiDou Navigation Satellite System Data analysis Fixing Navigation satellites Orbit determination Relativity Satellite navigation systems Satellite orbits Satellites 北斗卫星导航系统 双差动力法 模糊度固定 精密定轨 精度分析 |
title | 北斗卫星导航系统双差动力法精密定轨及其精度分析 |
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