Satellite-based automated successive asteroid observation method

Abstract

The invention discloses a satellite-based automated successive asteroid observation method. The method comprises the following steps: taking a target asteroid as tracking observation object, designing theoretical flight track parameters of a satellite according to the ephemeris of the asteroid, and then proposing that the following four basic light conditions need to be satisfied for satellite star sensor based asteroid observation: the relative distance between the satellite and the asteroid satisfies the specific observation distance requirement, the asteroid located in a sun light region can be completely observed, the earth does not enter the viewing field of the star sensor, and the apparent magnitude of the asteroid is lower than the apparent magnitude threshold; then judging whether the satellite star sensor can observe the asteroid: whether the asteroid is in the viewing field range of the star sensor, and whether the asteroid is in the two-dimensional image area array of the star sensor; calculating the theoretical direction vectors of the asteroid relative to the satellite as well as the azimuth angle and pitching angle; and finally adjusting the optical axis of the star sensor to conform to the theoretical direction, and truly observing the asteroid to provide data support for satellite-based automated successive asteroid observation.

Description

technical field [0001] The invention belongs to the space measurement field of spacecraft deep space exploration, and in particular relates to a method for autonomously and continuously observing asteroids by satellites. 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 c...

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Problems solved by technology

[0005] Purpose of the invention: The present invention is aimed at the deep space exploration of asteroids. The satellite cannot continuously track and observe the asteroid, which leads to the lack of information. Probing satellites provide high-precision relative observation information

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