遥感卫星星空定标时姿态规划方法OA

The positioning accuracy of ultra-large-scale mapping satellites for high-precision sur-veying and mapping depends largely on attitude measurement accuracy.With the further develop-ment of high-precision star sensor technology,the accuracy of reference-frame transformation be-tween star sensors and the cameras has become one of the key factors limiting the attitude meas-urement accuracy of optical cameras.Star-field calibration(in which an optical camera and mul-tiple star sensors simultaneously image stars)can be used to accurately calibrate the reference-frame transformation relationship between the star sensors and the camera.To address the chal-lenges of star-field calibration for remote sensing satellites,such as the small field of view of the camera,stray-light interference and the influence of external heat fluxes,an attitude planning method for multi-field-of-view star-field observation is proposed in the paper.The method pro-vides ideal observed sky regions and attitudes for star-field calibration of remote sensing satel-lites,ensuring that all optical imaging devices(such as optical cameras and star sensors)are free from stray-light interference during observation while maximizing the number of stars entering the camera field of view,thus ensuring observation effectiveness and improving observation quali-ty.Simulation results demonstrate the effectiveness of the proposed method.The obtained point-ing directions for star-field calibration ensure the availability of all onboard optical devices and lo-cally maximize the number of stars observed by the camera,thereby ensuring observation effec-tiveness and improving observation quality.