Fully autonomous measurement system and method for asteroid gravitational field based on spherical satellite formation

Abstract

The invention discloses an asteroid gravitational field full-autonomous measurement system and method based on spherical satellite formation and discloses an asteroid gravitational field full-autonomous measurement system and method. A minor planet gravitational field measurement task is executed by adopting a spherical satellite formation; wherein the main satellite has a deep space autonomous navigation and positioning capability; the collection of states such as position and speed can be realized under the condition of not depending on a ground measurement and control network; moreover, inter-satellite vector measurement exists between all the slave satellites and the master satellite, and the master satellite can determine the state of the whole spherical satellite formation accordingto the operation state of the master satellite and the inter-satellite vector measurement result of each slave satellite, thereby realizing the full-autonomous operation of a formation task independent of a ground measurement and control network. Moreover, the master satellite and the slave satellites in the spherical satellite formation adopt spherical satellite configurations, the spherical satellite configurations have isotropic characteristics, and the calculation of interference forces such as solar light pressure on the spherical satellites is independent of satellite attitudes, so thatthe interference force determination precision is improved, and the precision and resolution of asteroid gravitational field measurement are improved.

Description

technical field [0001] The present invention relates to the technical field of asteroid gravitational field measurement, in particular, to a system and method for fully autonomous measurement of asteroid gravitational field based on ball-satellite formation. Background technique [0002] Asteroid detection has important scientific significance and engineering value, and is a strategic growth point for future aerospace technology development. Accurate asteroid gravitational field models are the key to the success of asteroid exploration missions, and are also the basic physical parameters for asteroid system evolution analysis, mineral exploration and mining. Asteroid gravitational field measurement will become the core technology of exploration missions. Since the 1980s, the world's aerospace powers have launched more than ten missions to detect small celestial bodies such as asteroids and comets. From the perspective of detection form, the asteroid detection mission has go...

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Problems solved by technology

[0009] The present invention provides a system and method for fully autonomous measurement of asteroid gravitational field based on ball-satellite formation, to solve the problem that the existing asteroid gravitational field measurement method cannot be inverted to obtain a high-precision, high-resolution asteroid gravitational field model and Technical issues without autonomous measurement capabilities

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