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Proceedings Paper • Open Access

Dynamic MTF estimate of the optical imager onboard Alsat-1B satellite
Author(s): Chahira Serief; Youcef Ghelamallah

Paper Abstract

Unwanted movements during image recording usually cause problems for optical imaging systems onboard Earth Observation satellites. The major effect of these movements is the degradation of image quality by smearing and distortion. The aim of this paper is to provide estimates of the blur-caused MTF of an isolated CCD detector element as a result of linear motion to evaluate the impact of such blur, that may be experienced operationally, on the whole system MTF of the Alsat-1B imager. The estimates are made on ground prior to launch and include effects caused by linear motion of the spacecraft relative to the earth and exclude effects of motion caused by mechanical vibration or platform drift. Those estimates are of great importance as part of system level analysis which can help restoring the degraded image.

Paper Details

Date Published: 12 July 2019
PDF: 7 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111807S (12 July 2019); doi: 10.1117/12.2536199
Show Author Affiliations
Chahira Serief, Ctr. de Développement des Satellites (Algeria)
Youcef Ghelamallah, Ctr. de Développement des Satellites (Algeria)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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