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一种基于卫星穿刺点位置的区域电离层增强方法 被引量:3

A Regional Ionosphere Enhancement Method Based on Satellite Ionosphere Pierce Point
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摘要 提出了一种基于卫星穿刺点位置的区域电离层增强方法,采用非差非组合精密单点定位模型提取得到测站上空各个卫星斜向的电离层延迟值,结合IGS发布的DCB文件,考虑电离层延迟薄层假设理论,利用穿刺点空间三维坐标进行区域内插。试验结果表明,本方法能利用较为稀疏的参考站点进行区域建模,能为流动站提供与实际值偏差0.1 m以内的电离层延迟先验值;同时,流动站利用电离层增强信息,在保证定位结果精度的同时,相较于非差非组合模型,N、E、U 3个方向收敛到10 cm以内的时间均在30 min内,提升50%以上。
作者 杨新文 杨徉
出处 《测绘通报》 CSCD 北大核心 2016年第11期5-8,30,共5页 Bulletin of Surveying and Mapping
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