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Resolving Integer Ambiguity of GPS Carrier Phase Difference

机译：解决GPS载波相位差的整数歧义

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摘要

A new approach to resolve integer ambiguity and achieve instantaneous spacecraft attitude from phase information of Global Positioning System (GPS) signals, without requiring independent attitude information from traditional attitude sensors is presented. A newly approached algorithm based on Gram-Schmidt orthonormalisation (GSO) is proposed for medium length baseline observations. By using a newly developed attitude algorithm from vector observations, an instantaneous estimated attitude is obtained from only four phase measurements collected from only two baseline observations. The implemented algorithms are tested with flight data collected onboard a mini-satellite orbiting in low Earth orbit. The results show that a coarse attitude solution is achieved from phase information of stand-alone GPS signals.
机译：提出了一种从全球定位系统（GPS）信号的相位信息中解决整数模糊度并实现瞬时航天器姿态的新方法，而无需传统姿态传感器的独立姿态信息。针对中等长度的基线观测，提出了一种新的基于Gram-Schmidt正交归一化（GSO）的算法。通过使用基于矢量观测的最新开发的姿态算法，仅从两个基线观测收集的四个相位测量中即可获得瞬时估计姿态。使用在低地球轨道上的微型卫星轨道上收集的飞行数据对实施的算法进行测试。结果表明，从独立的GPS信号的相位信息可以实现粗略的姿态解。

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