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학술저널
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전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.9 No.4
발행연도
2009.7
수록면
631 - 642 (12page)

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초록· 키워드

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The sun is a useful reference direction because of its brightness relative to other astronomical objects and its relatively small apparent radius as viewed by spacecrafts near the Earth. Most satellites use solar power as a source of energy, and so need to make sure that solar panels are oriented correctly with respect to the sun. Also, some satellites have sensitive instruments that must not be exposed to direct sunlight. For all these reasons, sun sensors are important components in spacecraft attitude determination and control systems. To minimize components and structural mass, some components have multiple purposes. The solar cells will provide power and also be used as coarse sun sensors.
A coarse Sun sensor is a low-cost attitude determination sensor suitable for a wide range of space missions. The sensor measures the sun angle in two orthogonal axes. The Sun sensor measures the sun angle in both azimuth and elevation. This paper presents the development of a model to determine the attitude of a small cube-shaped satellite in space relative to the sun’s direction. This sensor helps small cube-shaped Pico satellites to perform accurate attitude determination without requiring additional hardware [1].

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ABSTRACT
1. Introduction
2. Sensors for Attitude Determination
3. Analog Sun sensors applications
4. Dynamic Modeling of Satellite Attitude
5. Sun Sensor modeling
6. Sun Vector for cubical (body mounted) satellites
7. Spacecraft Attitude Determination
8. Conclusions
References

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