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Proceedings Paper • Open Access

The Brazilian wide field imaging camera (WFI) for the China/Brazil earth resources satellite: CBERS 3 and 4
Author(s): L. C. N. Scaduto; E. G. Carvalho; R. G. Modugno; R. Cartolano; S. H. Evangelista; D. Segoria; A. G. Santos; M. A. Stefani; J. C. Castro Neto

Paper Abstract

The purpose of this paper is to present the optical system developed for the Wide Field imaging Camera - WFI that will be integrated to the CBERS 3 and 4 satellites (China Brazil Earth resources Satellite). This camera will be used for remote sensing of the Earth and it is aimed to work at an altitude of 778 km. The optical system is designed for four spectral bands covering the range of wavelengths from blue to near infrared and its field of view is ±28.63°, which covers 866 km, with a ground resolution of 64 m at nadir. WFI has been developed through a consortium formed by Opto Electrônica S. A. and Equatorial Sistemas. In particular, we will present the optical analysis based on the Modulation Transfer Function (MTF) obtained during the Engineering Model phase (EM) and the optical tests performed to evaluate the requirements. Measurements of the optical system MTF have been performed using an interferometer at the wavelength of 632.8nm and global MTF tests (including the CCD and signal processing electronic) have been performed by using a collimator with a slit target. The obtained results showed that the performance of the optical system meets the requirements of project.

Paper Details

Date Published: 11 January 2018
PDF: 7 pages
Proc. SPIE 10565, International Conference on Space Optics — ICSO 2010, 1056556 (11 January 2018); doi: 10.1117/12.2309103
Show Author Affiliations
L. C. N. Scaduto, Opto Eletrônica S.A. (Brazil)
E. G. Carvalho, Opto Eletrônica S.A. (Brazil)
R. G. Modugno, Opto Eletrônica S.A. (Brazil)
R. Cartolano, Opto Eletrônica S.A. (Brazil)
S. H. Evangelista, Opto Eletrônica S.A. (Brazil)
D. Segoria, Opto Eletrônica S.A. (Brazil)
A. G. Santos, Opto Eletrônica S.A. (Brazil)
M. A. Stefani, Opto Eletrônica S.A. (Brazil)
J. C. Castro Neto, Opto Eletrônica S.A. (Brazil)

Published in SPIE Proceedings Vol. 10565:
International Conference on Space Optics — ICSO 2010
Errico Armandillo; Bruno Cugny; Nikos Karafolas, Editor(s)

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