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Rapid and random temporal fluctuations in amplitude and phase of signal caused when GNSS signals are propagating through irregularities in electron density of the ionosphere are called amplitude and phase scintillation. Ionospheric scintillation can degrade receiver tracking performance, and in extreme cases, out of lock entirely. The elfect of amplitude scintillation on the signal is similar to that...
Ionospheric scintillation can cause rapid changes in the phase and amplitude of Global Navigation Satellite System (GNSS) signals, resulting in degraded accuracy and robustness of signal tracking loops. Owing to the non-stationarity and non-linearity of carrier tracking under scintillation conditions, the conventional methods used to enhance the robustness of tracking loops are less effective. To...
Ionospheric scintillation can cause rapid change in the phase and amplitude of BeiDou system (BDS) navigation signals, resulting in degraded accuracy and robustness of signal tracking loops. Compared with the frequency lock loop and delay lock loop, phase lock loop (PLL) is much weaker, and would lose lock much more continually in scintillation. We analyze the variance of PLL for BDS carrier tracking...
Focusing on the issue that the traditional high accuracy pseudo range generation is hard to satisfy the real-time request, a high accuracy real-time pseudo range generation method based on Hermit interpolation was proposed after the performance comparison of different interpolation algorithm. Then, its theoretical accuracy is analyzed and the main influence factors on the pseudo range generation accuracy...
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