A spacecraft attitude determination smart star sensor and its attitude determination method

Abstract

The invention discloses an intelligent star sensor for spacecraft attitude determination and an attitude determination method thereof. The intelligent star sensor includes an imaging module, a memory module, a processor module and a wireless transmission module, wherein the imaging module realizes the acquisition of available stars , and store the obtained star image information into the memory module; the memory module is used for information storage; the processor module reads the information of the memory module, processes it, and writes the result into the memory module; the wireless transmission module transmits the information sending and receiving. The invention realizes the intelligence of the star sensor for the first time, and can normally output the attitude of the spacecraft when the star sensor has only a single star observation vector or no star observation vector in a short period of time; There is no spaceborne computerization, thereby reducing the mass and volume of the spacecraft, which is conducive to spacecraft modularization, rapid assembly, testing and launch, and on-orbit upgrade and replacement of spaceborne components.

Description

technical field [0001] The invention belongs to the technical field of spacecraft attitude measurement, in particular to an intelligent star sensor oriented to spacecraft attitude determination and an attitude determination method thereof. Background technique [0002] As space missions become more complex and diverse, new requirements for spacecraft are continuously raised, such as requiring spacecraft to be small in mass, small in size, long in life and modular, thereby reducing the development cost of spacecraft, shortening the development and test cycle, and lay the foundation for the cableless onboard components and the upgrade and replacement of components. [0003] The attitude determination and control subsystem is one of the eight systems of the spacecraft. The modularization of the spacecraft requires the modularization of the subsystem, which puts forward higher requirements for the attitude determination system. The attitude sensor is an indispensable and import...

AI Technical Summary

Problems solved by technology

[0005] At present, there is no research on intelligent or cable-free star sensors at home and abroad

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