148 / 2023-08-25 12:30:48

Extracting GNSS ionospheric scintillation factor from multi-sampling interval geodetic receiver data

GNSS,Ionosphere,scintillation,cycle slip

As the 25th solar cycle peak approaches, the increasingly active ionosphere leads to frequent GNSS signal ionospheric scintillations, posing a significant threat to GNSS satellite stability and high-precision positioning services. Accurate monitoring and modeling are crucial for mitigating GNSS scintillation interference. However, the existing specialized equipment for scintillation (ionospheric scintillation monitoring receivers) is sparsely distributed and has limited coverage, making it challenging to meet the demand for wide-area scintillation monitoring. In contrast, geodetic receivers are widely distributed and serve as a valuable complement to ionospheric scintillation monitoring research. However, the current GNSS geodetic reference station network has inconsistent receiver sampling intervals, and low sampling rates can interfere with the accuracy of extracting ionospheric scintillation factors. Therefore, this paper proposes a GNSS ionospheric scintillation factor extraction method applicable to multi-sampling interval geodetic receiver data. The aim is to utilize the widely and relatively densely distributed GNSS geodetic reference station network for ionospheric scintillation monitoring research, enabling high-precision monitoring of ionospheric scintillations on a global scale.