GPS satellite oscillator faults mimicking ionospheric phase scintillation
GPS satellite oscillator faults mimicking ionospheric phase scintillation
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DOI：
10.1007/s10291-011-0247-3
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发表时间：
2012-10-01
期刊：
影响因子：
4.9
通讯作者：
Mitchell, Cathryn N.
中科院分区：
文献类型：
--
作者：
Benton, Christopher J.;Mitchell, Cathryn N.
未报告的全球定位系统卫星故障有可能造成类似电离层闪烁效应的相位变化。2011年5月17日事件的案例研究。在大约695 s的时间里，来自Navstar 43卫星的L1信号（伪随机数13）包含相位快速变化的脉冲，其方式导致sigma-phi闪烁量度的大幅上升。这一事件是由英国两个相距190公里的接收器同时观测到的。考虑了包括真正的电离层闪烁在内的一系列其他解释，但认为不太可能。因此，我们建议在解释相位闪烁值时采取预防措施，以防止卫星故障污染数据。
It is possible for unreported Global Positioning System satellite faults to cause phase variations mimicking the effect of ionospheric scintillation. A case study of an event on 17 May, 2011 is presented. For approximately 695 s, the L1 signal from the Navstar 43 satellite (pseudo-random number 13) contained pulses of rapid phase variation, in such a manner as to cause a large rise in the sigma-phi scintillation metric. The event was simultaneously observed from two receivers in England, placed 190 km apart. A range of other explanations, that included genuine ionospheric scintillation, were considered but found to be highly unlikely. We therefore recommend that precautions be taken when interpreting phase scintillation values, to prevent satellite faults from contaminating data.