Combined Effects of Geometric Rotation and Antenna Calibration Patterns on GNSS Phase Windup
Combined Effects of Geometric Rotation and Antenna Calibration Patterns on GNSS Phase Windup
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DOI：
10.1109/taes.2021.3071216
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发表时间：
2021-10
影响因子：
4.4
通讯作者：
J. Rife;Brandon Weaver;Tony Bogner;J. Soltz
中科院分区：
文献类型：
--
作者：
J. Rife;Brandon Weaver;Tony Bogner;J. Soltz
本文研究了全球导航卫星系统（GNSS）相结合，我们将其定义为3-D旋转和天线相模式对载体相测量的综合效果。具体而言，为具有空间变化的相模式的天线提供了相结合方程，例如，定义为卫星视线方向的函数的相模式，可能以方位角和Zenith角度为特征。我们观察到，几何旋转的描述以及对天线相模式的描述都需要准确评估一般天线的相通态。此外，我们表明没有独特的方法来计算相结局。实际上，正确计算相结合需要调整模型以匹配用于获得天线相模式的校准方法。
This article examines global navigation satellite system (GNSS) phase windup, which we define to be the combined effects of 3-D rotation and antenna phase patterns on carrier-phase measurements. Specifically, phase windup equations are presented for antennae with spatially varying phase patterns, for instance, phase patterns defined as a function of the satellite line-of-sight direction, as might be characterized by azimuth and zenith angles. We observe that a description both of the geometric rotation and, also, of the antenna phase pattern are needed to accurately evaluate phase windup for a general antenna. Furthermore, we show that there is not a unique approach for computing phase windup; in fact, correctly computing phase windup requires adjusting the model to match the calibration method used to obtain the antenna phase pattern.