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Time transfer using multi-channel GPS receivers

机译:使用多通道GPS接收机进行时间传输

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摘要

This report is on time transfer experiments using a GlobalnPositioning System (GPS) receiver constructed using a commercial GPSn“engine” and a standard PC. The receiver measures the timendifference between the local clock and a 1 pps signal synchronized tonGPS time using data from up to 8 satellites. The receiver also reportsnthe difference between GPS time as estimated using each of thensatellites being tracked and the composite output pulses that have anrate of 1 Hz (1 pps signal). These data can be used to construct thenstandard 13-minute tracks as defined in the BIPM standard; the same datanalso can be averaged in other ways that make better use of thenmulti-channel capabilities of the hardware. The 13-minute averages cannbe directly compared with standard time-transfer receivers usingncommon-view analysis. The results of the tests suggest that the methodsncurrently used for national and international time and frequencyncoordination should be re-examined, and an alternative approach based onnmulti-channel receivers is suggested that should be more flexible,nsimpler, and easier to operate than the current system
机译:该报告是关于使用全球n定位系统(GPS)接收器进行时移实验的,该全球n定位器是使用商用GPSn“引擎”和标准PC构造的。接收器使用最多8颗卫星的数据来测量本地时钟与1 pps信号同步tonGPS时间之间的时间差。接收器还会报告使用跟踪的每个卫星估算的GPS时间与速率为1 Hz(1 pps信号)的复合输出脉冲之间的差。这些数据可用于构建BIPM标准中定义的标准13分钟轨道;同样的数据也可以通过其他方式进行平均,以更好地利用硬件的多通道功能。使用普通视图分析无法将13分钟的平均值与标准时间传输接收器直接进行比较。测试结果表明,应重新检查当前在国家和国际时间和频率协调上使用的方法,并建议一种基于多通道接收器的替代方法,该方法应比当前系统更灵活,更简单,更易于操作。

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