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NASA launched the Canadian observation satellite in 1995. Since then the American government has controlled 15 percent of RADARSAT-1's observation time. Furthermore, the U.S. has full access to all archived RADARSAT data more than 6 months old.
American federal agencies also pay extra subscription fees like the US$3.4 million paid in late July for RADARSAT-1 data to monitor locations around the world for 12 months.