New Star-Pattern Identification Using a Correlation Approach for Spacecraft Attitude Determination

PURPOSE: A method for recognizing a star of a star sensor using a correlation function is provided to recognize the identification number of stars in an original image by extracting an object image which maximizes a cost function and referring to the distribution pattern of the stars in the extracted image. CONSTITUTION: A star sensor generates a k-th object image about the surrounding stars and a k-th star through a modeling(120). The star sensor respectively generates first to N-th object images(130). The star sensor generates an original image through the modeling of the stars in a star image(140). The star sensor extracts an object image which maximizes a cost function(150). The star sensor recognizes stars in the original image by analyzing the extracted object image(160).

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