Design of ionospheric scintillation intermediate frequency data acquisition and scintillation monitoring platform based on software defined radio architecture

Ionospheric scintillation refers to the phenomenon where the amplitude and phase of satellite navigation signals undergo rapid and random fluctuations as they pass through ionospheric irregularities. The southern region of China lies within the equatorial ionospheric anomaly zone, where ionospheric scintillation occurs frequently, significantly impacting the performance of satellite navigation systems. Currently, the primary means of monitoring ionospheric scintillation relies on specialized satellite navigation ionospheric monitoring receivers, which are costly and still face the risk of monitoring interruptions under strong scintillation conditions. software defined radio (SDR) technology, characterized by its flexible configuration and extensible functionality, has emerged as a new direction for ionospheric scintillation monitoring. This paper designs an SDR-based ionospheric scintillation monitoring platform and proposes a scintillation-event-driven adaptive intermediate-frequency data acquisition strategy. The effectiveness of the intermediate-frequency data acquisition and monitoring platform has been verified through practical deployment and experimental testing.