The U.S. Air Force's revised upgrade strategy for its next-generation GPS 3 satellite navigation constellation could see anti-jam capabilities added to the system beginning with the ninth satellite, a senior service official said. But Doug Loverro, executive director of Air Force Space and Missile Systems Center in Los Angeles, cautioned that no final decisions have been made on the GPS 3 upgrades, which are awaiting approval from the Office of the Secretary of Defense. The office recently completed an analysis of alternatives on GPS 3 upgrades following the Air Force decision to do away with its block upgrade strategy for the program. That plan, abandoned last year, called for GPS 3 prime contractor Lockheed Martin Space Systems to build up to 32 GPS 3 satellites in three successive blocks with corresponding capability improvements.
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