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Proceedings Paper • Open Access

From SPOT 5 to Pleiades HR: evolution of the instrumental specifications
Author(s): A. Rosak; C. Latry; V. Pascal; D. Laubier

Paper Abstract

Image quality specifications should aimed to fulfil high resolution mission requirements of remote sensing satellites with a minimum cost. The most important trade-off to be taken into account is between Modulation Transfer Function, radiometric noise and sampling scheme. This compromise is the main driver during design optimisation and requirement definition in order to achieve good performances and to minimise the mission cost.

For the SPOT 5 satellite, a new compromise had been chosen. The supermode principle of imagery (sampling at 2.5 meter with a pixel size of 5 meter) imp roves the resolution by a factor of four compared with the SPOT 4 satellite (10 meter resolution).

This paper presents the image quality specifications of the HRG-SPOT 5 instrument. We introduce all the efforts made on the instrument to achieve good image quality and low radiometric noise, then we compare the results with the SPOT 4 instrument’s performances to highlight the improvements achieved. Then, the in-orbit performance will be described. Finally, we will present the new goals of image quality specifications for the new Pleiades-HR satellite for earth observation (0.7 meter resolution) and the instrument concept.

Paper Details

Date Published: 21 November 2017
PDF: 9 pages
Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 105680I (21 November 2017); doi: 10.1117/12.2307974
Show Author Affiliations
A. Rosak, CNES (France)
C. Latry, CNES (France)
V. Pascal, CNES (France)
D. Laubier, CNES (France)

Published in SPIE Proceedings Vol. 10568:
International Conference on Space Optics — ICSO 2004
Josiane Costeraste; Errico Armandillo, Editor(s)

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