As one of the three major innovations of FAST, the active reflective surface is composed of main components such as the main cable net, reflective panel, pull-down cable, actuator and supporting structure. Its essence is to adjust the reflecting surface in the illumination range to the designated parabolic position in real time according to the position of the observed celestial body, so that the parallel electromagnetic waves emitted by the celestial body will always converge at one point after being reflected by the reflecting surface. Aiming at the problem that the Chinese FAST sky eye refl...
