METHOD AND SYSTEM FOR DETECTING OBJECT WITH SPECIFIC MOTION ON CELESTIAL SPHERE (DEBRIS OR THE LIKE ON STATIONARY ORBIT)

摘要

PROBLEM TO BE SOLVED: To provide a data processing method that can detect dark debris without interference by background noise in a fixed star tracking mode suitable to a wide-ranging observation. SOLUTION: For an arbitrary point P0 on an image, a point P1 where an object of observation point-imaged at an exposure start time is imaged at an exposure end time is computed, and an image output on a line joining the points P0 to P1 on image data is added. This process is carried out for every point in the image. Before the addition of the image data on the line joining the points P0 to P1, a level of noise is determined, and a high-density image of a celestial body in the image data is replaced with the noise level to erase the star image. The noise level may be determined through the computation of a peak value of a histogram of data on the processed region of the image.