Following extensive reports of GPS interference, LightSquared announced last week that it would vacate its L-Band frequency adjacent to GPS and move to one further away to greatly reduce, but not eliminate, interference with satnav signals.
Global Positioning System
A study released by the Save Our GPS Coalition warns of “serious repercussions for the U.S. economy” if LightSquared is allowed to broadcast 4G broadband signals that cause interference with GPS. According to the study, more than 3.3 million U.S.
West Star Aviation recently installed the first Rockwell Collins Pro Line 4 to Pro Line 21 upgrade on the Falcon 2000. The upgrade is now available for Pro Line 4-equipped Falcon 2000/2000EXs.
It is only in the past few of years that GPS approaches, pioneered in Alaska in the 1990s, have started to become available. These form another element of a future, efficient system where aircraft are managed in time as well as space, take efficient paths and don’t waste burning fuel in unnecessary holds.
Since early reports indicate that LightSquared’s transmitters do, in fact, interfere with GPS signals, LightSquared yesterday announced that it would vacate the frequency that caused major GPS interference and move to one farther away, where tests had shown minimum interference. However, some GPS receivers would still be affected by the company’s 4G signals even in this frequency band.
When Rockwell Collins officially celebrated the first full-rate production delivery of its ARC-210 RT-1939(C) Generation 5 radio to PMA 209, the air combat electronics program office of the U.S. Naval Air Systems Command in late April, it marked a milestone.
One of the most important weapons development programs here in France is the INS/GPS+laser-guided variant of Sagem’s AASM (armement air-sol modulaire in French, now also known by its NATO name of SBU-38 Hammer). The AASM has been achieving good success in its INS/GPS- and INS/GPS+IR-guided versions, and the laser version will provide the significant ability to hit moving targets.
Israel Aerospace Industries (IAI) is showing off its latest precision-guided munition here at Le Bourget.
In accordance with the Federal Communication Commission’s January ruling, LightSquared must, in its June 15 final report on GPS compatibility tests, show that “it is clear that potential GPS interference concerns have been resolved.” But hold that applause, GPS users.
“The test data discussed today makes clear that there is substantial interference to GPS if LightSquared turns on high-powered terrestrial facilities in the spectrum next door to GPS,” Trimble vice president and general counsel Jim Kirkland said today at an event sponsored by the National Space-Based PNT Advisory Board. Kirkland is also a founding member of the Coalition to Save Our GPS.