Independent celestial navigation method of deep space probe based on minor planet intersection

• Main Authors: FANG JIANCHENG, WU WEIREN, MA XIN, NING XIAOLIN, BAI XINBEI
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2012
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention relates to an independent celestial navigation method of a deep space probe based on minor planet intersection. The method comprises the following steps of: establishing a state model of the deep space probe according to a circular restrictive track dynamics model; acquiring picture element and picture line information of minor planets and a background fixed star by using a sensor, converting the acquired picture element and picture line information into angle information of the minor planets and the background fixed star and establishing an angle measuring model of the minor planets; and estimating the position and speed of the deep space probe in combination with self-adaptive Unscented Kallman filtering. The method has high estimation accuracy, and is very suitable for independent navigation during minor planet intersection. The method belongs to the technical field of aerospace navigation. By adopting the method, high-accuracy navigation parameters can be provided for the deep space probe, a