The Perfect Soldier: Special Operations, Commandos, and the Future of Us Warfare by James F. Dunnigan
Dirty Little Secrets
How To Defeat GPS Jammers
GPS has become a vital component for U.S. combat forces, and several nations have developed and sell GPS jammers. The U.S. Air Force has equipped its GPS weapons with electronic and software features that help overcome this jamming. But DARPA (Defense Advanced Research Projects Agency) is developing an even more powerful anti-jamming system that also solves a more common problem; weak GPS signals. When a GPS guided weapon goes after a target in a canyon, the GPS signals are often so weak that the guidance system must revert to the backup, and several times less accurate, inertial guidance system.
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