College of Big Data and Information Engineering;
Guizhou University;
Guiyang 550025;
China;
Key Laboratory of Solar Activity;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101;
China;
Xinjiang Astronomical Observatory;
Chinese Academy of Sciences;
Urumqi 830011;
China;
Key Laboratory of Radio Astronomy;
Chinese Academy of Sciences;
Urumqi 830011;
China;
Center for Astrophysics;
Guangzhou University;
Guangzhou 510006;
China;
methods:data analysis; techniques:image processing; techniques:interferometric;