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Ye Li

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Proceedings Article | 31 December 2010 Paper

Design and research of sun sensor based on technology of optical fiber

Ye Li, Wang Zhou, Dan Li

Proceedings Volume 7544, 75442Z (2010) https://doi.org/10.1117/12.885363

KEYWORDS: Sensors, Sun, Space operations, Optical fibers, Solar energy, Amplifiers, Sensor technology, Data processing, Head, Signal processing

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A kind of sun sensor is designed based on the optical fiber. This project consists of three parts: optical head, photoelectric sensor and signal processing unit. The innovation of this design lies in the improvement of traditional sun sensor, where multi-fibers, used as a leader, are symmetrically distributed on the surface of a spacecraft. To determine the attitude of a spacecraft, the sun sensor should measure the direction of the sun. Because the fiber length can be adjusted according to the fact, photoelectric sensor can be placed deeply inside a spacecraft to protect the photoelectric sensor against the damage by the high-energy particles from outer space. The processing unit calculates the difference value of sun energy imported by each pair of opposite optical fiber so as to obtain the angle and the orientation between the spacecraft and the sun. This sun sensor can suit multi-field of view, both small and large. It improves the accuracy of small field of view and increases the precision of locating a spacecraft. This paper briefly introduces the design of processing unit. This sun sensor is applicable to detect the attitude of a spacecraft. In addition, it can also be used in solar tracking system of PV technology.

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