| タイトル | Micro Sun Sensor for Spacecraft |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110016550 |
| 著者（英） | Mobasser, Sohrab; Bae, Youngsam; Wrigley, Chris; Schroeder, Jeffrey; Liebe, Carl |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 2004-01-01 |
| 言語 | eng |
| 内容記述 | A report describes the development of a compact micro Sun sensor for use as a part of the attitude determination subsystem aboard future miniature spacecraft and planetary robotic vehicles. The prototype unit has a mass of only 9 g, a volume of only 4.2 cm(sup 3), a power consumption of only 30 mW, and a 120 degree field of view. The unit has demonstrated an accuracy of 1 arcminute. The unit consists of a multiple pinhole camera: A micromachined mask containing a rectangular array of microscopic pinholes, machined utilizing the microectromechanical systems (MEMS), is mounted in front of an active-pixel sensor (APS) image detector. The APS consists of a 512 x 512-pixel array, on-chip 10-bit analog to digital converter (ADC), on-chip bias generation, and on-chip timing control for self-sequencing and easy programmability. The digitized output of the APS is processed to compute the centroids of the pinhole Sun images on the APS. The Sun angle, relative to a coordinate system fixed to the sensor unit, is then computed from the positions of the centroids. |
| NASA分類 | Man/System Technology and Life Support |
| レポートNO | NPO-30867 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/269220 |
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