A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
CHENG Na. "Study on ionosphere anomaly monitoring based on multi-source data and its effect on GNSS." Acta Geodaetica et Cartographica Sinica (2021) 1277-1277