Unscented Kalman Filter based Autonomous Optical Navigation Method

Through much research into environment characteristic of the fast movement and anomalous celestial bodies figure in autonomous orbit determination of deep space explorer, an autonomous optical navigation scheme based on Unscented Kalman Filter is proposed to determine the circling orbit state in time, in which star sensor and navigation camera are used in measuring special angles between planetoids and explorer, which can promote parameter mean and predictive precision, so it can solve the difficulty of autonomous orbit determination. Compared with extended Kalman filter, it shows that its performance is better than extended Kalman filter based on minimum mean square error.