Abstract: The disclosure analyzes moon-earth relationship and influencing factors for geometric distortion of a moon-based earth image, focuses on influences of position change of a sublunar point, a curvature of the earth, a terrain fluctuation on a large-scale hemisphere image, and the problem of small number of ground control points and uneven distribution thereof, and proposes a projection polar coordinate geometric expression method for the moon-based earth observation image, which takes into account of movement of the sublunar point, while considering multi-platform earth observation data, to realize accurate automatic geometric correction of the moon-based platform earth observation data.

Abstract: The disclosure analyzes moon-earth relationship and influencing factors for geometric distortion of a moon-based earth image, focuses on influences of position change of a sublunar point, a curvature of the earth, a terrain fluctuation on a large-scale hemisphere image, and the problem of small number of ground control points and uneven distribution thereof, and proposes a projection polar coordinate geometric expression method for the moon-based earth observation image, which takes into account of movement of the sublunar point, while considering multi-platform earth observation data, to realize accurate automatic geometric correction of the moon-based platform earth observation data.