星历误差的低次曲面模型改正方法

发布时间：2018-02-26 12:52

本文关键词： 星历误差广域差分曲面模型优化布局　出处：《导航定位学报》2016年03期 　论文类型：期刊论文

【摘要】：针对广播星历误差限制了广域差分定位精度的问题,提出了星历误差的低次曲面模型改正方法。通过6个均匀分布的差分站与5颗由GEO、MEO和IGSO卫星组成的导航星座对该方法进行仿真验证,结果表明低次曲面模型法能将星历误差改正到较高的精度。同时,针对6个差分站改正效果均匀性较差的问题,提出了11个差分站优化布局方案,使得低次曲面模型法的改正效果更加均匀,定位精度达到1 m以内。该方法对广域差分定位精度有良好的改正效果,而且在GEO、MEO和IGSO卫星导航星座中具有通用性,对我国卫星导航星基增强系统建设有一定的参考价值。
[Abstract]:Aiming at the problem that broadcast ephemeris error limits the accuracy of wide area differential positioning, A method for correction of ephemeris error based on low order curved surface model is proposed. The method is simulated by six uniform differential substations and five navigation constellations composed of GEOOMEO and IGSO satellites. The results show that the low order curved surface model method can correct the ephemeris error to a higher accuracy. At the same time, aiming at the problem of poor uniformity of correction effect in 6 substations, 11 optimal layout schemes of the difference substations are put forward. The correction effect of the low order curved surface model method is more uniform, and the positioning accuracy is less than 1 m. This method has a good correction effect on the wide area differential positioning accuracy, and is universal in GEOOMEO and IGSO satellite navigation constellation. It has certain reference value for the construction of satellite-based augmentation system of satellite navigation in China.
【作者单位】：桂林电子科技大学电子工程与自动化学院;北京邮电大学自动化学院;桂林电子科技大学广西精密导航技术与应用重点实验室;
【基金】：国家自然科学基金项目(61263028) 广西自然科学基金重点项目(2012GXNSFDA053027,2014GXNSFBA118280) 中国科学院时间频率基准重点实验室开放基金项目(Y000YR1S01) 桂林电子科技大学研究生教育创新计划资助项目(GDYCSZ201478)
【分类号】：P228.4

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