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Proceedings Paper

New Technological Solutions For Earth Observations Instruments With A Wide Field Of View
Author(s): J P Durpaire; M Laporte; R Krawzcyk; A Durieux; A Juvigny
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Paper Abstract

The improvements of the second-generation SPOT satellites increase Earth observation capabilities in three main ways: - the spectral range has been extended by adding a new infrared band to the HRV imaging instrument, now known as the HRVIR*, - the satellite's lifetime has been extended from 2.5 to 5 years, - the repetitivity of medium spatial resolution acquisitions has been increased by, adding "Vegetation", a new wide field of view instrument with the same spectral bands as the HRVIR. Its frequent image acquisi-tions can therefore be used to supplement the fewer observations made by the HRVIR. These improvements have been made to the SPOT 4 satellite which is to be launched in 1994. The first part of this article describes the main characteristics of the Vegetation payload's mission and gives a brief description of the payload itself. The second part looks at the payload's main sub-assembly, the imaging instrument. Like the HRVIR, this ins-trument has no constantly moving mechanical parts. The choice of a "static" solution (electronic scanning) for a wide field of view instrument has led us to conceive and develop (1) new technological solutions for the optical parts (2), a high-performance image electronics common to all spectral bands (3) and an onboard calibration device.

Paper Details

Date Published: 25 July 1989
PDF: 10 pages
Proc. SPIE 1070, Reconnaissance, Astronomy, Remote Sensing and Photogrammetry, (25 July 1989); doi: 10.1117/12.952486
Show Author Affiliations
J P Durpaire, CNES (United States)
M Laporte, CNES (United States)
R Krawzcyk, Aeropostale (United States)
A Durieux, Cerco (United States)
A Juvigny, Sodern (United States)


Published in SPIE Proceedings Vol. 1070:
Reconnaissance, Astronomy, Remote Sensing and Photogrammetry
Irving Hirschberg, Editor(s)

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