Electronic Weapons: September 30, 2002


Bombs using GPS bombs can, in theory, be easily misled by jamming. Using readily available components worth less than a hundred bucks, you can make a device that will jam all GPS signals for a hundred miles. If this is so, why is the U.S. upping producing of its JDAM GPS guided bombs (to over 200,000 bombs)? Simple, the jamming can be defeated. Talking openly about how this is done is counterproductive. If the bad guys know how you are prepared to defeat their jamming, they can adjust their jamming equipment to be more effective. For example, if you use a Digital Excision Temporal Filter (DETF) to defeat the jammer the enemy may know that DETF cannot defeat a shorter range wideband barrage jammer (but can handle the cheaper, and longer range, CW, pulse CW and swept CW types.) You can defeat barrage jammers using beamsteering and locking-on techniques. Like any other form of electronic warfare, no counter-measure stays effective for once the enemy has experienced it.




Help Keep Us From Drying Up

We need your help! Our subscription base has slowly been dwindling.

Each month we count on your contributions. You can support us in the following ways:

  1. Make sure you spread the word about us. Two ways to do that are to like us on Facebook and follow us on Twitter.
  2. Subscribe to our daily newsletter. We’ll send the news to your email box, and you don’t have to come to the site unless you want to read columns or see photos.
  3. You can contribute to the health of StrategyPage.
Subscribe   Contribute   Close