International Journal of Computational and Applied Mathematics & Computer Science
E-ISSN: 2769-2477
Volume 1, 2021
Design of an Electro-Optical Imaging Payload for a Small Spacecraft
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Abstract: Remote sensing satellites require very accurate pointing to specific locations of interest with high resolution and small latency. Therefore, the space imaging systems attempted to achieve the possible highest ground resolution with minimum cost as possible. The most promising prospects for high resolution imaging are connected with passive optical sub-systems, especially push broom one. In this paper, design process of an electrooptical imaging payload is described considering the limited weight and small volume in addition to minimum power consumptions. The electro-imaging payload scanning system is push broom with ground resolution 7.8 meters which operates in three multispectral bands and one panchromatic band at satellite altitude 668 km. The panchromatic band covers a wide spectral range from 500- 885 nm. The images of the four bands have to be of the same ground scene. Because of the limited weight of the camera (22.2 kg), the multispectral consists of only one single optical system large F-Number (F5) and provided with spectrum splitter. To receive the radiation reflected from the earth surface, a linear CCD array will be used which has more than 6000 pixels with a square pixel elements of 10*10 microns, so it is equivalent to 46.8 km across track direction and 7.8 m along track direction on the ground.
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Pages: 1-5
International Journal of Computational and Applied Mathematics & Computer Science, E-ISSN: 2769-2477, Volume 1, 2021, Art. #1