Mathematics – Logic
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6409e..10e&link_type=abstract
Lidar Remote Sensing for Environmental Monitoring VII. Edited by Singh, Upendra N.; Itabe, Toshikazu; Rao, D. Narayana. Procee
Mathematics
Logic
1
Scientific paper
The Atmospheric Dynamics Mission ADM-Aeolus will be the wind lidar in orbit. The aim is to provide global observations of wind profiles with a vertical resolution that will satisfy the requirements of the World Meteorological Organization. ADM-Aeolus will carry just one large instrument-the Atmospheric Laser Doppler Lidar Instrument (ALADIN). This is a direct detection lidar operating in the ultra-violet spectral region (355 nm), using a frequency-tripled Nd:YAG laser as transmitter. The 1.5-m-telescope in ALADIN collects the backscattered light and directs it to an optical receiver, which measures the Doppler shift of the received light. Wind profiles will then be derived showing the relative strength and direction of winds at different altitudes. Aeolus will determine the wind velocity component normal to the satellite velocity vector. These wind profile measurements will be assimilated into numerical forecasting models to improve the quality of the global three-dimensional wind fields. EADS-Astrium (UK and France) and their subcontractors develop Aeolus and ALADIN. The structure models of satellite and instrument have been successfully tested in Summer 2005. The structure model of the satellite has been fully qualified, and the transmitter laser is under development at Galileo Avionica (Italy). Still, many challenges still have to be faced to demonstrate the reliable long lifetime operation of this laser before the launch in late 2008.
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