School;
of;
Info-physics;
and;
Geometrics;
Engineering,;
Central;
South;
University,;
Changsha;
410083,;
China;
Changsha;
Aeronautical;
Vocational;
and;
Technical;
College,;
Changsha;
410124,;
China;
Institute;
of;
Geophysics,;
ETH-Swiss;
Federal;
Institute;
of;
Technology,;
Zurich;
8092,;
Switzerland;
Institute;
of;
Higher;
Education,;
Central;
South;
University,;
Changsha;
410083,;
China;