分步组合部分模糊度固定法在中短基线中的应用Application of sub-step combination partial ambiguity resolution method in medium-short baseline
邵晓东,陈源军,史小雨,单弘煜
摘要(Abstract)：
针对模糊度的固定率不高的问题,该文提出了一种分步式组合部分模糊度固定方法。首先,通过信噪比、高度角以及卫星连续追踪的历元数筛选可固定的模糊度;然后,采用LAMBDA方法对其进行固定,如果固定失败则依据卫星的连续跟踪数、模糊度浮点解方差以及浮点解相位残差选择模糊度最优子集重新搜索固定;最后,在Ratio检验的基础上,增加模糊度历史信息检验。采用自主编制的软件对低纬度地区静态与动态中短基线双频GPS/BDS/GLONASS实测数据进行处理,结果表明:采用本文研究的方法能够一定程度上控制未收敛的模糊度影响,提高模糊度固定成功率,同时尽可能地保证了模糊度固定的可靠性。
关键词(KeyWords)： 中短基线;模糊度固定率;部分固定;分步式组合
基金项目(Foundation):
作者(Author): 邵晓东,陈源军,史小雨,单弘煜
DOI: 10.16251/j.cnki.1009-2307.2018.11.003
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