摘要
The image elements of earth-center and moon-center are obtained by processing the images of earthand moon, these image elements in combination with the inertial attitude information and the moon ephemerisare utilized to obtain the probe initial position relative to earth, and the Levenberg-Marquardt algorithm is usedto determine the accurate probe position relative to earth, and the probe orbit relative to earth is estimated by u-sing the extended Kalman filter. The autonomous optical navigation algorithm is validated using the digital simu-lation.
The image elements of earth-center and moon-center are obtained by processing the images of earth and moon, these image elements in combination with the inertial attitude information and the moon ephemeris are utilized to obtain the probe initial position relative to earth, and the Levenberg-Marquardt algorithm is used to determine the accurate probe position relative to earth, and the probe orbit relative to earth is estimated by using the extended Kalman filter. The autonomous optical navigation algorithm is validated using the digital simulation.