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首页> 外文会议>Proceedings of the national technical meeting : "Vision 2010: Present and future" >GPS Receiver Satellite/Antenna Selection Algorithm for the Stanford Gravity Probe B Relativity Mission
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GPS Receiver Satellite/Antenna Selection Algorithm for the Stanford Gravity Probe B Relativity Mission

机译：斯坦福重力探测器B相对任务的GPS接收器卫星/天线选择算法

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摘要

This paper presents a GPS receiver satellite/antenna selection algorithm for the Stanford Gravity Probe B Relativity Mission. A Trimble Advanced Navigation Sensor Vector receiver onboard the space vehicle, a four-antenna six-channel GPS receiver, will provide real-time navigation solutions for orbit trim and raw measurements for ground post-processing, both for more accurate position and velocity and for attitude solutions. The GPS receiver satellite/antenna selection algorithm will determine the visibility of GPS satellites and assign a satellite and a master antenna to each receiver channel in order to maintain signal tracking. In this paper a new four-step GPS satellite selection algorithm is presented, which shows good performance with much less computations compared to the conventional algorithms. The smooth transfer between subsequent GPS satellite sets is also considered in the algorithm, such that continuity of the navigation data is maintained. The antenna selection algorithm is designed to maximize the signal to noise ratio of each master antenna. This paper also presents simulation results of performance comparisons of this new algorithm with conventional algorithms.
机译：本文提出了一种用于斯坦福重力探测器B相对论任务的GPS接收器卫星/天线选择算法。航天器上的Trimble Advanced导航传感器矢量接收器，四天线六通道GPS接收器将为轨道修整和原始测量提供实时导航解决方案，以进行地面后处理，从而获得更精确的位置和速度，以及态度解决方案。 GPS接收器卫星/天线选择算法将确定GPS卫星的可见性，并为每个接收器通道分配一个卫星和一个主天线，以保持信号跟踪。本文提出了一种新的四步GPS卫星选择算法，与传统算法相比，该算法具有良好的性能，并且计算量更少。该算法中还考虑了后续GPS卫星组之间的平滑传输，以保持导航数据的连续性。天线选择算法旨在最大化每个主天线的信噪比。本文还介绍了该新算法与常规算法性能比较的仿真结果。

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