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Airbus-built Aeolus wind sensor satellite ready for shipment
by Staff Writers
Toulouse, France (SPX) Jun 07, 2018

illustration only

Aeolus, the European Space Agency's wind sensing satellite, is now ready for its upcoming launch. It will be shipped across the Atlantic on the Airbus vessel "Ciudad de Cadiz" to Kourou, French Guiana, where a Vega launcher will send it to orbit on 21 August.

The instrument is so sensitive that it could be damaged by a sudden loss of pressure. For this reason, air transportation has to be avoided and for the first time Airbus will transport one of its satellites on-board its own vessel.

The 1.33-tonne spacecraft, primed by Airbus, features the first ever space-borne LIDAR (LIght Detection And Ranging) instrument called Aladin, which uses the Doppler effect to determine the wind speed at varying altitudes.

Aladin fires a powerful ultraviolet laser pulse down through the atmosphere and collects backscattered light, using a large 1.5m diameter telescope, which is then analysed on-board by highly sensitive receivers to determine the Doppler shift of the signal from layers at different heights in the atmosphere.

"Aeolus is a world first with break-through technology that will make a huge contribution to weather forecasting on a global scale. Pioneering a LIDAR instrument in Space is quite a challenge - but a great example of what Europeans can achieve when we work together!", said Nicolas Chamussy, Head of Space Systems at Airbus.

The data from Aeolus will provide reliable wind-profile data on a global scale and is needed by meteorologists to further improve the accuracy of weather forecasts and by climatologists to better understand the global dynamics of Earth's atmosphere.

Aeolus will orbit the Earth 15 times a day with data delivery to users within 120 minutes of the oldest measurement in each orbit. The orbit repeat cycle is 7 days (every 111 orbits) and the spacecraft will fly in a 320 km orbit for three years.


Related Links
Airbus
Space Technology News - Applications and Research


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Japan to receive digital radar systems from Raytheon
Washington (UPI) May 30, 2018
Raytheon was awarded a contract by the Department of Defense on Tuesday for digital radar warning systems that will benefit Japan. The contract, from the U.S. Air Force Life Cycle Management Center, is valued $90 million under the terms of an indefinite-delivery, indefinite-quantity contract, which is part of a foreign military sale of digital radar warning receiver systems to the government of Japan, the Pentagon announced on Tuesday. The Raytheon-produced AN/ALR‐69A digital radar war ... read more

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