Disruption created by intentional generation of fake GPS signals could have serious economic consequences. This article discusses how typical civil GPS receivers respond to an advanced civil GPS spoofing attack, and four techniques to counter such attacks: spread-spectrum security codes, navigation message authentication, dual-receiver correlation of military signals, and vestigial signal defense. Unfortunately, any kind of anti-spoofing, however necessary, is a tough sell.

Cite and download the article:
Wesson, K., D. Shepard, and T. Humphreys, "Straight Talk on Anti-Spoofing: Securing the Future of PNT," GPS World, January, 2012.

Read the article online.