
The RADARSAT constellation is a pair of Canadian Remote Sensing satellites. The constellation consists of: ==The Company== RADARSAT International (RSI) was formed in 1989 by a consortium to market, process, and distribute data worldwide from Canada`s RADARSAT-1 Earth-observation satellite. ...
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http://en.wikipedia.org/wiki/RADARSAT

A Canadian satellite equipped with a powerful synthetic aperture radar (SAR) – the world`s first civilian satellite SAR – that is an important source of environmental and resource information. RADARSAT`s steerable, 15-meter-wide SAR dish collects images of the ocean and land, with a reso...
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http://www.daviddarling.info/encyclopedia/R/RADARSAT.html

acronym: Synthetic Apeture Radar Satellite (Canada)
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https://www.encyclo.co.uk/local/20002
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