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Developing an IGS time scale

机译:制定IGS时间尺度

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摘要

Currently, the International GPS Service (IGS) provides a set of clock products for both satellites and tracking receivers, tabulated at 5-min intervals. These products allow users to determine consistent coordinates and clock values for an isolated GPS receiver with an internal accuracy at the few-cm level. However, because the underlying time scale for the IGS combined clocks is based on a linear alignment to broadcast GPS Time for each day separately, the day-to-day stability of this reference is poor. We show the results of a new filter package written to automate the production of an integrated IGS frequency scale based on a dynamically weighted ensemble of the included frequency standards. The new scale is loosely steered to GPS Time.
机译:当前,国际GPS服务(IGS)为卫星和跟踪接收器提供了一套时钟产品,每隔5分钟列出一次。这些产品使用户能够以几厘米级别的内部精度为隔离的GPS接收机确定一致的坐标和时钟值。但是,由于IGS组合时钟的基本时标是基于线性对齐的,因此每天分别广播GPS时间,因此该参考的日常稳定性很差。我们展示了一个新的滤波器程序包的结果,该程序包的编写是基于包含的频率标准的动态加权集合,自动生成集成的IGS频率标度。新的比例尺宽松地转向了GPS时间。

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