University of Chinese Academy of Sciences;
Beijing 100012;
P. R. China;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100012;
P. R. China;
Five-hundred-meter; Aperture; Spherical; radio; Telescope; (FAST); trilateration; feed; measurement; total; station; prism; system(TPS); arrangement; of; total; station;