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System using hybrid LEO-GPS satellites for rapid resolution of integer cycle ambiguities

机译：使用混合LEO-GPS卫星的系统可快速解决整数周期歧义

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摘要

Resolution of integer cycle ambiguities is a critical requirement for centimeter-level carrier-phase positioning. This paper investigates the issue of GPS rapid resolution of integer cycle ambiguities, where a Low Earth orbit (LEO) ranging satellite is utilized to obtain large satellite geometry variations generated by its fast-moving property. We define a new system by adding the LEO ranging satellite transmitting signals on the L1 and/or L2 band to the GPS to improve the ability to estimate the integer cycle ambiguities rapidly, and analyse the performance using canonical metrics, such as gain in baseline precision, ambiguity precision and correlation, and ambiguity dilution of precision. Furthermore, in terms of success probability, we evaluate the performance of the proposed scheme compared with that of GPS. In addition, the impacts of the altitude of LEO satellite orbit, the number of visible satellites, the LEO satellite???s L2 navigation frequency, and different locations of the receivers on the ambiguity resolution are further analysed. The performance of the proposed scheme is demonstrated through in-depth numerical simulations.
机译：整数周期模糊度的解决是厘米级载波相位定位的关键要求。本文研究了整数周期模糊度的GPS快速分辨率问题，其中利用低地球轨道（LEO）测距卫星获取由其快速移动特性产生的大型卫星几何变化。我们通过将L1和/或L2频带上的LEO测距卫星发射信号添加到GPS中来定义一个新系统，以提高快速估计整数周期模糊度的能力，并使用规范指标（例如基线精度的增益）来分析性能，歧义精度和相关性以及歧义稀释精度。此外，就成功概率而言，我们将所提方案的性能与GPS进行了比较。此外，还进一步分析了LEO卫星的轨道高度，可见卫星的数量，LEO卫星的L2导航频率以及接收机的不同位置对歧义度的影响。通过深入的数值模拟证明了该方案的性能。

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