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    What defense does the US have to prevent an enemy from knocking out GPS satellites ?

    Question #123858. Asked by shimonbentzvi. (Oct 16 11 3:47 PM)


    raffucci

    		The GPS system's signal is extremely weak and is vulnerable to both intentional and unintentional interference. As dependence on GPS increases, the need to ensure the availability of GPS also grows and therefore, GPS jamming is becoming a major concern for many armies. The US military maintains exclusive access to the accurate "P-code" pseudo random code, which has ten times the frequency of the civilian Coarse/Acquisition (C/A) code and therefore is potentially more accurate and much more difficult to jam.

    More info: http://defense-update.com/products/g/gps-aj.htm



    Oct 16 11, 6:29 PM

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