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Proceedings Paper • Open Access

Concept and design of the backscatter Lidar for EarthCARE
Author(s): Lénaïc Le Hors; Christian Wührer; Arnaud Hélière

Paper Abstract

EarthCARE is one of the three candidate Earth Explorer Core Missions of the ESA Living Planet Programme. It will address the interaction and impact of clouds and aerosols on the Earth’s radiative budget. ATLID (ATmospheric LIDar), one of the four instruments of EarthCARE, shall determine vertical profiles of clouds and aerosols physical parameters (altitude, optical depth, backscatter ratio and depolarisation ratio) in synergy with other instruments. Operating in the UV range at 355 nm, ATLID provides atmospheric echoes with a vertical resolution of 100 m from ground to an altitude of 30 km. Thanks to a high spectral resolution filtering, the lidar is able to separate the relative contribution of aerosol (Mie) and molecular (Rayleigh) scattering, which gives access to aerosol optical depth. The following addresses the current instrument design as worked-out by Astrium during the EarthCARE Phase-A Study, which was was run in 2002-2003 under ESA contract. Besides the basic architecture trade-offs, the emphasis is put on some major technical and technological choices that were done to optimise the lidar performances and efficiency.

Paper Details

Date Published: 30 August 2019
PDF: 8 pages
Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 1056830 (30 August 2019);
Show Author Affiliations
Lénaïc Le Hors, EADS Astrium (France)
Christian Wührer, EADS Astrium (Germany)
Arnaud Hélière, European Space Research and Technology Ctr. (Netherlands)

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

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