Experimental Analysis of Positioning Accuracy of GPS/BeiDou on Elevation Mask
Experimental Analysis of Positioning Accuracy of GPS/BeiDou on Elevation Mask
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GPS/北斗在高程掩模上的定位精度实验分析
DOI：
10.1109/ictc46691.2019.8939723
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Ren SHINOZAKI ; Hiroshi OGUMA ; Suguru KAMEDA ; Noriharu SUEMATSU
中科院分区：
文献类型：
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作者：
Ren SHINOZAKI ; Hiroshi OGUMA ; Suguru KAMEDA ; Noriharu SUEMATSU
近来，在各个领域中期望通过全球导航卫星系统（GNSS）来利用位置信息。然而，定位精度取决于测量环境。因此，难以唯一地示出定位精度。本文采用天空视角因子（SVF）对GPS/北斗系统的定位精度进行了估计。特别地，在SVF为39.0%的地方测量和评估定位精度。通过分析多径效应对定位精度的影响，在可见卫星数和多径效应之间进行了折衷。此外，我们评估有关的最佳海拔面具设置。并对定位精度降低的原因进行了评价。结果，可以说定位精度的降低可以分为3种情况。第一种情况受可见卫星数量的影响很大。第二种情况是可见卫星数量的影响很大或相当于多径的情况。第三种是多径影响大的情况。
Recently, utilization of position information by global navigation satellite system (GNSS) is expected in various fields. However, positioning accuracy is dependent on the measurement environment. Therefore, it is difficult to show uniquely the positioning accuracy. We apply the Sky View Factor (SVF) for estimation of positioning accuracy with GPS/BeiDou system. In particular, positioning accuracy is measured and evaluated at a place with SVF of 39.0%. By evaluating the influence of multipath for position accuracy, the number of visible satellites and multipath are trade-off. Also, we evaluate about the optimal elevation mask settings. And, we evaluate about the cause of positioning accuracy lowering. As a result, it can be said that the lowering in positioning accuracy can be divided into 3 cases. The first case is greatly affected by the number of visible satellites. The second is the case where the influence of the number of visible satellites is large or equivalent to multipath. The third is the case where the influence of multipath is large.