Multi-star-sensor-cluster adaptive layout method and system based on occlusion judgment

Abstract

The invention provides a multi-star-sensor-cluster adaptive layout method and system based on occlusion determination, and the method comprises the steps: building a parameterized transfer coordinate system according to a whole-satellite coordinate system, and building a parameterized coordinate system at an original point of the transfer system; establishing a star sensor mounting coordinate system at the center of the star sensor mounting surface; establishing and assembling a sheltered model and a sheltering model, performing position self-adaptive bias of a single star sensor in a cluster based on sheltering judgment, and performing rotation angle self-adaptive bias of the star sensor based on sheltering judgment on the basis of the position self-adaptive bias; after single star sensor layout in the cluster is completed, other star sensors in the cluster are laid out, a star sensor model with layout completed serves as a newly-added shielding model to be introduced into the layout process of other star sensors, star sensor judgment is executed, and self-adaptive layout of other star sensors in the multi-star-sensor cluster is achieved; and after the adaptive layout of the multi-star-sensor cluster is completed, outputting an offset relationship among the installation system, the transfer system, the X-axis corner system, the Y-axis corner system and the Z-axis corner system of each star sensor.

Description

technical field [0001] The invention relates to the field of satellites, and in particular, to a method and system for adaptive layout of multi-star-sensitive clusters based on occlusion determination. Background technique [0002] With the rapid development of earth observation remote sensing satellites, the guarantee of high-precision observation performance puts forward higher requirements for the satellite's attitude control accuracy and attitude measurement accuracy. The star sensor is a commonly used high-precision attitude measurement device, which has the advantages of high precision and absolute measurement, and is widely used in the attitude measurement of spacecraft. At present, in order to obtain higher attitude measurement accuracy, the satellite is usually equipped with multiple high-precision star sensors. During the orbital operation, multiple star sensors are used to perform attitude measurement at the same time to improve the system measurement accuracy. A...

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Problems solved by technology

4) The invention does not disclose how to realize the specific method of "meeting the requirements of multiple flight attitudes at the same time, and solving the technical problem that the head of the star sensor cannot rotate flexibly with the spacecraft and cannot meet the requirements of multiple flight attitudes"

This method only discloses how to determine the optical axis vector of the star sensor, but the position and overall orientation of the star sensor installation layout have not been disclosed

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