All-time star sensor star point de-aliasing method and system based on field-of-view gating

The invention discloses an all-time star sensor star point de-aliasing method based on view field gating. The method comprises the following steps: step S100, calculating a displacement difference value of two star point coordinates in a secondary image plane before and after the star sensor moves; step S200, calculating a displacement difference value of two star points on the virtual primary image surface before and after the star sensor moves; and S300, calculating a relative position relationship between star points by combining the star point displacement difference between the secondary image surface and the virtual primary image surface, and performing star point de-aliasing operation. According to the method, star point de-aliasing can be realized in a short time, star points and gating view fields are in one-to-one correspondence, the calculation method is simple, the algorithm purpose can be realized without repeated matching, the real-time performance of the algorithm can be ...