There is also the use of directional antennas. Difficult to put your jammer between the Rx and the sat.
--- On Sun, 15/11/09, Magnus Danielson <[email protected]> wrote: From: Magnus Danielson <[email protected]> Subject: Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillatoraccuracy) To: [email protected], "Discussion of precise time and frequency measurement" <[email protected]> Date: Sunday, 15 November, 2009, 20:48 Didier Juges wrote: > Enough for what? To bug the heck out of a citizen suddenly unable to find his > way to the movie theater? > > Weapon systems and aircraft navigation are unlikely to be affected by such a > simple device on the ground, even if deployed in large quantity. Most of the > stuff that really needs GPS has decent antennas that look up, not down. They are affected, it is well covered, but the difference is the distance from the jammer until affected. It's a fairly well-understood problem and the difference between civilian and military receivers lies in signals, keying for access, bootstrapping and testing and counter-measures such as IMU. Cheers, Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
