[1]School of Electronic Science and Engineering;
University of Electronic Science and Technology of China;
Chengdu 610054;
China;
[1]School of Electronic Science and Engineering;
University of Electronic Science and Technology of China;
Chengdu 610054;
China;
[1]School of Electronic Science and Engineering;
University of Electronic Science and Technology of China;
Chengdu 610054;
China;
[2]School of Physics;
University of Electronic Science and Technology of China;
Chengdu 610054;
China;
[1]School of Electronic Science and Engineering;
University of Electronic Science and Technology of China;
Chengdu 610054;
China;
PMSE echoes; geomagnetic indices; EISCAT UHF radar;