Improved search method for star sensor full celestial sphere maximum group recognition
A technology of star sensor and search method, which is applied in the field of random number retrieval, can solve the problems of time consumption and affect the time performance of the algorithm, and achieve the effect of improving the search speed.
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[0028] Such as figure 2 Shown, the present invention is concretely realized as follows:
[0029] (1) Sorting the observation stars extracted from the star map from large to small in energy, and using the order of energy from large to small as the observation star serial number for matching and identification with the navigation stars in the star catalog;
[0030] (2) Calculate the sine value of the angle between two observation stars, and generate the observation star pair angular distance table;
[0031] (3) Use the K vector method to select all navigation star pairs that match each pair of observation star pairs in the observation star pair angular distance table generated in step (2) in the navigation star angular distance pair table, and all navigation star pairs need to be simultaneously The following two conditions are met:
[0032] a) The absolute value of the difference between the angular distance between the navigation star and the observed star is less than or eq...
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