GPS is an Attractive Nuisance

One of the many interesting exchanges at the US National Position, Navigation, and Timing Advisory Board in December was Professor Per Enge’s response to a question about how having a high power, difficult-to-disrupt, terrestrial eLoran system that provided GPS-like...

U.S. Forces Prepare for a ‘Day Without Space’

A potential nightmare for combatant commanders is a “day without space.” In this scenario, a peer or near-peer competitor severely limits U.S. forces’ access to military communication and navigation spacecraft through jamming or something more destructive, such as...

GPS Navigation: Can’t Live Without It, Can’t Trust It

That’s the problem facing military planners as they try to sort through the increasing reliance of equipment and troops on positioning data from satellite networks at a time when the vulnerabilities of GPS are becoming more apparent. This month, a group of...

Exelis Signal Sentry Test Locates GPS Signal Jamming Threats

Signal Sentry 1000, an Exelis product that detects and locates GPS interference sources in 3-D by using longitude, latitude and altitude has demonstrated successful results during a planned field testing event held last week at the Vidsel Test Range in Sweden....