Share Email Print
cover

Proceedings Paper • Open Access

PROBA V multispectral imager: status
Author(s): Alessandro Zuccaro Marchi; Jorg Versluys; Ignacio Torralba; Didier Beguin; Yvan Stockman; Ronald Kassel

Paper Abstract

PROBA V is an ESA mission devoted to the observation of the Earth’s vegetation, providing data continuity with the Spot 4 and 5 vegetation payloads. Thanks to the heritage of the Proba series, the satellite’s platform is smaller than a cubic metre, accommodating the main payload, i.e. the Vegetation Instrument (VI), and some technology demonstrators. The VI extremely wide viewing swath, together with a polar low Earth orbit, enables daily revisits during 2.5 years, with a possible extension to 5 years. The mission, whose satellite is developed by Belgian QuinetiQ Space, is actually in Phase D and the targeted launch is early 2013 with the VEGA launcher.

The Vegetation Instrument is a high spatial resolution pushbroom 4 spectral bands imager composed of three distinct Spectral Imagers (SI). Each SI has 34° Field Of View (FOV) across track, and the total FOV of the VI is 102°, covering an Earth swath of 2260 Km with ground sampling distance down to 96 m at Nadir for VNIR bands.

The spectral bands are centred around 460 nm for the blue, 655 nm for the red, 845nm for the NIR and 1600 nm for the SWIR. The imaging telescope is built from a Three-Mirrors Anastigmat (TMA) configuration, including two highly aspheric mirrors. The optics is manufactured from special grade aluminium by diamond turning. The material being identical to the whole structure, no defocus or stresses build up with temperature variations in flight.

This paper gives an overview of the VI performances, and focuses on the results of the optical tests and on-ground calibrations.

Paper Details

Date Published: 20 November 2017
PDF: 7 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105640D (20 November 2017); doi: 10.1117/12.2309045
Show Author Affiliations
Alessandro Zuccaro Marchi, AOES bv. (Netherlands)
Jorg Versluys, OIP Sensor Systems (Belgium)
Ignacio Torralba, INTA Instituto Nacional de Técnica Aeroespacial (Spain)
Didier Beguin, LAMBDA-X Sa. (Belgium)
Yvan Stockman, Ctr. Spatial de Liège (Belgium)
Ronald Kassel, QinetiQ Space nv. (Belgium)


Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

© SPIE. Terms of Use
Back to Top