System and method for vibration suppression of star simulation system by means of laser interference detection

A vibration suppression system for star simulation system using laser interference detection, comprising a laser light source, a first beam splitter, collimator set, a second beam splitter, a mirror, a detection convergent mirror assembly, a CCD detector, a computer control system, a jitter compensating mirror and a flat splitter;

• the optical path of the whole system comprises a reference optical path and a detection compensating signal optical path, wherein:
• the reference optical path:
• the light emitted by the laser light source reaches the collimator set via the first beam splitter to emit parallel first light beams which reach the mirror via the second beam splitter, and are reflected by the mirror to form second light beams which reach the detection convergent mirror assembly, and the emitted light converges on the CCD detector to form a reference optical path;
• the detection compensating signal optical path:
• the parallel first light beams transmit the second beam splitter to form third light beams;
• the third light beams are reflected by the jitter compensating mirror and propagate to the flat splitter;
• the reflected light beams reflected by the flat splitter are reflected by the jitter compensating mirror to the second beam splitter to form fourth light beams;
• the fourth light beams propagate to the detection convergent mirror assembly and converge on the CCD detector to form a detection compensating signal optical path;
• the CCD detector and the jitter compensating mirror are both coupled to computer control system;
• the reference optical path and the detection compensating signal optical path converge at the same time on the CCD detector to constitute a vibration detection interference optical path, and the computer control system performs feedback compensation according to interferogram intensity changes formed by the vibration detection interference optical path.