Dynamic LCOS (liquid crystal on silicon) spliced-type star simulator and ground calibrating device of star sensor

The invention provides a dynamic LCOS (liquid crystal on silicon) spliced-type star simulator and a ground calibrating device of a star sensor. The dynamic LCOS spliced-type star simulator comprises a star atlas display system, an illumination system and an optical system, wherein the star atlas display system comprises an LCOSI and a LCOSII which act as display devices of the dynamic star simulator by adopting an image surface splicing mode. According to the ground calibrating device of the star sensor, by means of the advantages of small pixel size, good dynamic property, high definition, high contrast ratio, high aperture opening ratio and low cost of the LCOS, a two-LCOS splicing technique is adopted for expanding the pixel surface, so that not only is the resolution ratio for star atlas simulation improved, but also the atlas simulation precision is improved.