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ESA'S ARCTIC WEATHER SATELLITE TO FLY WITH A RUAG SPACE POWER SYSTEM
Wednesday, May 5, 2021
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.Source: RUAG Group


Source: RUAG Group


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GOTHENBORG, Sweden -- RUAG Space has been awarded the contract to provide the power system for the prototype of the Arctic Weather Satellite’s (AWS) radiometer instrument. The mission’s goal: to enable precise, short-term weather forecasts.

The prototype for the Arctic Weather Satellite (AWS) mission currently being developed by ESA with OHB Sweden as Mission prime is the precursor to a potential satellite constellation that would provide a near-constant stream of temperature and humidity data from anywhere on Earth. This would make very short-term weather forecasts - known as "nowcasting" - in the Arctic possible for the first time and would allow to better predict storms or extreme weather conditions. OHB Sweden leads the industrial consortium for the AWS mission. Omnisys Instruments in Sweden is the instrument prime contractor from which RUAG Space has now received a contract to supply the power system for the prototype’s radiometer instrument including the design, manufacturing, testing and delivery.

Improving weather forecasts in the Arctic

Today, satellites, both those in geostationary orbit and in polar orbit, provide a wealth of information that meteorologists use routinely to forecast the weather. However, the monitoring of the Arctic remains insufficient. Up to now, only patchy weather data have been available for the polar regions. One of the reasons for this is that geostationary weather satellites have only limited coverage at high latitudes. Although measurements are also carried out by weather satellites on polar orbits, since they fly over all latitudes, there are relatively large time intervals between the individual data points. Atmospheric parameters, however, are subject to constant change, which is why data with high temporal resolution are needed for precise weather forecasts. The polar-orbiting AWS mission complements the data of existing satellites systems such as MetOp or its US counterpart, the Joint Polar Satellite System (JPSS). It does that by providing global measurements of the atmospheric temperature and humidity with frequent revisit times which will help improve weather forecasts, specifically in the Arctic. For that, the AWS satellite will carry a 19-channel cross-track scanning microwave radiometer providing the necessary high-resolution humidity and temperature soundings of the atmosphere in all weather conditions.

"New Space" approach with agile, cost-effective production methods

RUAG Space’s Power System is set to be delivered in Q4 2022. The launch of the prototype satellite weighting about 120 kilograms is planned to take place in 2024. The now ordered prototype is planned to be followed-up by a constellation of 16 AWS satellites. Subject to a follow-up decision after the prototype, the constellation would be implemented with the European Organization for the Exploitation of Meteorological Satellites EUMETSAT according to the cooperation model established with the Meteosat and MetOp satellites.

Source:  RUAG
Associated URL: ruag.com

 

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