Small, inexpensive GPS jammers carried by truckers have caused the occasional shutdown of the Laas test installation at Newark Airport. The devices, powered by simply plugging into the cigarette lighter, are intended to foil interrogations of the truck's remotely installed GPS and its coupled cellphone by the trucking company's dispatcher to check on the vehicleπs location and progress.
Satellite navigation systems
Garmin reports that LightSquared’s proposed nationwide broadband Internet service could seriously interfere with GPS signals. As a result of this and other filed objections, the FCC is withholding LightSquared’s operational approval until a three-month independent expert analysis agrees that this will not occur.
The U.S. Departments of Defense, Transportation, Commerce and Homeland Security, as well as the civil GPS Industry Council–of which NBAA is a member–have filed objections with the FCC over a new satellite-enabled cellular broadband service from LightSquared.
Several years ago, when satellites were being touted as aviation’s sole means of navigation from takeoff to touchdown, former FAA Administrator Langhorne Bond painted a picture of a dark winter’s night with below-limits weather up and down the east coast. In that scenario, he stated, terrorist GPS jammers could become “weapons of mass destruction.” The FAA shrugged it off as unfounded speculation.
GPS designers understood from the beginning that the system’s weak signals would be vulnerable to inadvertent or deliberate interference, with the threat formally recognized by the DOT’s Volpe Center in Cambridge, Mass., on Sept. 10, 2001�one day before 9/11. Since that time, the Department of Defense has run annual all-altitude tests�over the Western U.S.
Following successful ADS-B deployment at key sites in the U.S., the FAA gave the go-ahead for the system’s national rollout, with coast-to-coast U.S. coverage forecast in 2013.
Gulfstream has received FAA approval to add Waas functionality in the G150 as part of a final-phase manufacturing installation that adds an optional Waas-capable GPS receiver to the airplane. The Waas upgrade is also available for retrofit in G150s already in service.
A June editorial in GPS World magazine notes that ICAO’s marine equivalent, the International Maritime Organization (IMO), has endorsed eLoran as the backup to GPS. This echoed the unanimous view of GPS industry leaders, who advocate eLoran as the best solution for all users.
Eurocopter recently announced the success of the flights it conducted in November with an EC145 light twin to test Galileo satellite navigation. Galileo, Europe’s GPS counterpart, is expected to offer higher reliability than current augmented GPS. But
the helicopter manufacturer does not expect the tested applications to be operational until 2015.