【摘 要】
：
三频精密单点定位(PPP)无电离层组合模型的线性组合系数有无穷多组,最优线性组合系数的选取差异会影响PPP精度,目前学者在选取最优组合系数时少有考虑北斗导航系统(BDS)三个
【机 构】
：
东南大学交通学院,南京,中国,211189
论文部分内容阅读
三频精密单点定位(PPP)无电离层组合模型的线性组合系数有无穷多组,最优线性组合系数的选取差异会影响PPP精度,目前学者在选取最优组合系数时少有考虑北斗导航系统(BDS)三个频点上伪距噪声量级差异,本文提出了顾及BDS三个频点上伪距噪声差异选取最优组合系数的方案.以此为背景,采用实测数据进行北斗双频常规模型、未顾及噪声差异的北斗三频模型以及顾及噪声差异的北斗三频模型的静态浮点解PPP试验.结果表明,与北斗双频常规模型相比,未顾及噪声差异的北斗三频模型在平面定位精度上提高了30％,顾及噪声差异的北斗三频模型在平面定位精度上提高了36%.
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