Visual autonomous navigation method of satellite relative to minor planet

Abstract

The invention discloses a visual autonomous navigation method of a satellite relative to a minor planet. The method can provide high-precision position and speed information for satellite formation flying, and effectively solves the problem of low navigation precision caused by insufficient satellite formation flying observation information. A star sensor is a celestial body sensor for observing afixed star; the star sensor is used for observing specific conditions which the minor planet needs to meet. The illumination condition and the star sensor observation condition needing to be met during the minor planet observation are provided; the problem that a traditional star sensor only can passively observe; the autonomous observation accuracy is improved. On the basis of realizing inter-satellite observation, a method of calculating the azimuth vector, the azimuth angle and the pitch angle of the minor planet relative to the satellite is provided; a universal shaft is used for regulating the optical axis pointing of the star sensor to continuously track the minor planet; the problem that the traditional observation cannot realize continuous tracking is solved; the inter-satellite continuous observation efficiency is improved.

Description

technical field [0001] The invention relates to the field of space measurement of spacecraft deep space exploration, in particular to a method for autonomous navigation of satellites relative to asteroid vision. Background technique [0002] With the development of deep space exploration technology, asteroid detection has become one of the important contents of deep space exploration in the 21st century. Carrying out asteroid detection will not only help to uncover the mystery of the origin and evolution of the solar system and life, but also promote the protection of the earth , The development of space science and space technology applications can provide verification for key technologies of further deep space exploration. [0003] At present, all major aerospace countries attach great importance to the formulation of deep space exploration strategies, and have clarified their respective development directions and priorities from a strategic height. However, the current de...

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Problems solved by technology

[0005] Purpose of the invention: Aiming at the problem that satellites cannot continuously track and observe asteroids, resulting in information loss, the present invention proposes a new method for satellites to use star sensors to independently and continuously observe asteroids for autonomous navigation for deep-space exploration of asteroids. Space exploration satellites provide high-precision relative observation information

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