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Combination of Beidou and GPS observations to establish regional Ionospheric map
Indian Journal of Geo-Marine Sciences ( IF 0.5 ) Pub Date : 2020-09-08
X Z Wang, F Y Ke

This paper uses dual-model observations of the 118 stations from October 11th to November 27th, 2016 to establish the quasi real time Beidou Regional Ionospheric Map (RIMC), GPS Regional Ionospheric Map (RIMG) and the combined Regional Ionospheric Map (RIMM). The precise weights of each Beidou and GPS observations are determined by using the Helmert variance component estimation method. Then the DCBs of GPS satellites are compared with that published by CODE. The grid points of the areas where the IPPs covers are selected to further analyze the accuracy of the RIMM by comparing with the RIMC, RIMG and CODE GIM of DoY 287-332, 2016. The experimental results show that the accuracy of the RIMM improves about 0.3 TECU after adding the GPS observations.

中文翻译:

结合北斗和GPS观测建立区域电离层图

本文利用2016年10月11至11月27对118个站点的双模式观测资料,建立了准实时北斗区域电离层图(RIMC),GPS区域电离层图(RIMG)和组合区域电离层图(RIMM)。 )。使用Helmert方差分量估计方法确定每个北斗和GPS观测值的精确权重。然后将GPS卫星的DCB与CODE发布的DCB进行比较。通过与Doy 287-332(2016年)的RIMC,RIMG和CODE GIM比较,选择IPP覆盖区域的网格点进一步分析RIMM的精度。实验结果表明RIMM的精度提高了约添加GPS观测值后的0.3 TECU。
更新日期:2020-09-08
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