US: Experts at the annual meeting of the Civil Global Positioning System Service Interface Committee, a global forum that fosters interaction between the U.S. and worldwide GPS users, voiced their fears about GPS jamming and spoofing. A single well-placed GPS jammer could disrupt signals in a medium-sized city, said an official from the Homeland Security Department (DHS).
DHS programme manager John Merrill said that the US still “lacks the capability to rapidly detect and geo-locate jamming or spoofing of GPS services”. Jules McNeff, who spent 20 years in the Air Force working on GPS and is now vice president for strategies and programmes at a GPS engineering firm, estimated a one watt GPS jammer could blanket a medium-sized city. Consumer jammers at these power levels can be purchased on the Internet at prices as low as $40. In September 2012, the Federal Aviation Administration (FAA) set up a GNSS Intentional Interference and Spoofing Study Team to “identify technical, political, legal, and operational ways to mitigate the impact of GPS spoofing and jamming.” Deborah Lawrence, manager of FAA”s navigation programmes, told the conference that the team will, by the end of September, provide “specific, actionable recommendations” on how to counteract spoofing and jamming.