Výsledky vyhledávání - "Rodolphe Krawczyk"

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Outdoor fibre link between two telescopes and the lab of the CHARA array at 810 nm. Demonstration of the optical path servo control

Autor: Julie Magri, Ludovic Grossard, François Reynaud, Marc Fabert, Laurent Delage, Rodolphe Krawczyk, Jean-Michel Le Duigou

In the framework of the ALOHA (Astronomical Light Optical Hybrid Analysis) project, dedicated to high resolution imaging in the L-band using optical fibre and nonlinear optics, we have implemented a servo controlled hectometric outdoor fibre link bet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1488e2baaec2269b673b1d91b724dd28
https://doi.org/10.21203/rs.3.rs-2014442/v1

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Influence of the input-stage architecture on the in-laboratory test of a mid-infrared interferometer: application to the ALOHA up-conversion interferometer in the L band

Autor: Jean-Michel Le Duigou, Ludovic Grossard, Laurent Delage, Lucien Lehmann, Florent Bassignot, Mathieu Chauvet, François Reynaud, Julie Magri, Rodolphe Krawczyk

Publikováno v: Monthly Notices of the Royal Astronomical Society. 501:531-540

In the framework of the Astronomical Light Optical Hybrid Analysis (ALOHA) laboratory mid-infrared (MIR) up-conversion fibred interferometer in the L band, we report on the influence of the input-stage architecture. Using an amplitude division set-up

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3bc90e0fec96fdb961d211dcec772fd
https://doi.org/10.1093/mnras/staa3283

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System assessment study of the ESA Darwin Mission: concepts trade-off and first iteration design on novel Emma arrangement

Autor: L. Pirson, C. Degrelle, Michel Sghedoni, O. Simane, E. Thomas, O. Chanal, Rodolphe Krawczyk, Cyril Ruilier

Publikováno v: SPIE Proceedings.

ESA's Darwin mission is devoted to direct detection and spectroscopic characterisation of Earth-like planets in the thermal infrared domain by nulling interferometry in space. This technique requires deep and stable starlight rejection to an efficien

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de9e9128390968068f5bd8b7bd6217dc
https://doi.org/10.1117/12.733679

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Infra arcsec, infra mJy astronomy: exoplanetary scene models for exo-Earth detection through IR interferometric nulling

Autor: Stephen Dunne, Stephane Bonnot, O. Germain, Didier Miras, Adrian R. Belu, Rodolphe Krawczyk, Christian Erd, Malcolm Fridlund, Guilaine Lagache, Farrokh Vakili, Roland den Hartog, Marc Ollivier

Publikováno v: 2006, France

We have conducted an exhaustive inventory of potential astrophysical "noise sources" with respect to the detection and characterisation of Earth-like planets, focusing on the specifics of the nulling interferometry technique. We have extrapolated the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae8eed697e14b8e683cb0ed6d4ee58eb
https://hal.archives-ouvertes.fr/hal-00417013

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ALADIN: an atmospheric laser Doppler wind lidar instrument for wind velocity measurements from space

Autor: Michel Royer, Michael Vaughan, Thierry Midavaine, H. Heimel, David V. Willetts, Michael R. Harris, Rodolphe Krawczyk, G. N. Pearson, Philippe Salamitou, Jean-Yves Labandibar, F. Lieutaud, Alain Dabas, Jean-Bernard Ghibaudo, Pierre H. Flamant, Remi Charasse

Publikováno v: SPIE Proceedings.

AEROSPATIALE, leading a European team, has just conducted a successful study, under ESA contract, to demonstrate the feasibility of a spaceborne Doppler wind lidar instrument meeting the scientific requirements of wind velocity measurements from spac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62893386370e08febe4117ed0ff87453
https://doi.org/10.1117/12.255180

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Wind velocity, water vapor, and temperature measurements from space using 2-μm Tm:Ho;YAG laser

Autor: Rodolphe Krawczyk, Jacques Pelon, Errico Armandillo, Jean-Bernard Ghibaudo, Pierre H. Flamant, Marc Andre Francois Q Faucheux, Giorgio Fiocco, Roberta Fantoni, G. Benedetti-Michelangeli, E. Hettlage, G. Salvetti, Willy A.R. Luethy

Publikováno v: Space Optics 1994: Earth Observation and Astronomy.

In meteorological and climatological fields, the scientific community will increasingly need global measurements of key atmospheric parameters with high spatial resolution (horizontal as well as vertical): the spaceborne lidars are the most suitable

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e3363fe5efb43534ff2d38c9fad0dac
https://doi.org/10.1117/12.185249

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Water vapor, temperature and wind velocity measurements from space using 2 micron Tm:Ho:YAG

Autor: Rodolphe Krawczyk, Jean-Bernard Ghibaudo

Publikováno v: SPIE Proceedings.

A differential absorption lidar (DIAL) and a Doppler wind lidar (DWL) for future ESA mission dedicated to water, vapor, temperature, and wind velocity measurements are described. A feasibility study of all solid state technologies for spaceborne DIAL

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::126f0ebff68b2eb5c8926ce29f81593e
https://doi.org/10.1117/12.137885

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