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首页> 外文会议>ION Pacific PNT Meeting >Characterization of Ionospheric GPS Phase Irregularities over the Canadian Auroral Region
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Characterization of Ionospheric GPS Phase Irregularities over the Canadian Auroral Region

机译：在加拿大极光区对电离层GPS相位不规则性的表征

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摘要

Ionospheric irregularities over the auroral region are frequent phenomena which are mostly driven by the coupling processes between the solar wind and Earth's magnetic field. Because of the complexity of ionospheric irregularity formation, they are difficult to predict. However, statistical analysis of ionospheric irregularities' occurrences can lead to enhanced understanding of their behaviour and improves climatological models. Dual frequency 1-Hz GPS phase rate variations respond well to ionospheric irregularities with appropriate scale sizes over the auroral region. Compared to phase scintillation index from dedicated scintillation receivers normally tracking at 50-100 Hz, dual-frequency phase rate indices from geodetic receivers are less susceptible to satellite and receiver oscillator instabilities due to time differencing at two frequencies. However, because of the lower sampling rate and their tracking loop thresholds, geodetic quality receivers may not capture rapid changes of the phase. Furthermore, strong phase scintillations cause rapid phase shifts, which may exceed phase lock loop bandwidth and result in loss of lock. Nevertheless 1-Hz geodetic receivers are found to provide valuable measurements for synoptical studies on climatology of phase scintillations over high latitudes.
机译：以上极光区域电离层不规则频繁现象，其主要是由太阳风和地球磁场之间的耦合过程驱动。由于电离层不规则形成的复杂性，他们是难以预料的。然而，电离层不规则出现的统计分析可能会导致增强他们的行为的理解，提高了气候模型。双频1Hz的GPS相速率的变化反应良好与适当的规模大小在极光区域电离层的不规则性。相比于从专用闪烁接收机通常在50-100赫兹跟踪阶段闪烁指数，从大地测量接收机双频相位速率指标是卫星和接收机的振荡器不稳定性不太敏感由于时间在两个频率差分。然而，由于较低的采样速率和它们的跟踪环路的阈值，大地测量质量接收器可能无法捕捉相位的快速变化。此外，强相位闪烁引起快速相移，这可能超过锁相环带宽并导致失锁。然而1赫兹大地测量接收器被发现对相位闪烁高纬度地区，气候学的研究概要的提供有价值的测量。

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