The Coalition to ‘Save Our GPS,’ through vice president and general counsel Jim Kirkland of founding member Trimble, has responded to claims by LightSquared, which is seeking approval for a terrestrial broadband communication service in a frequency spectrum very close to that of GPS.
Intelsat’s Galaxy 15 geostationary satellite, which ceased broadcasting the Waas signal covering some airports in Alaska on December 16, is now back under control.
Embraer’s Phenom 300 has received approval for the upgrade to Garmin’s synthetic vision technology (SVT). The FAA, EASA and Brazil’s Agência Nacional de Aviação Civil have all approved SVT for the Phenom 300’s Prodigy flight deck. SVT shows a color-coded 3-D “visual topographic landscape” derived from Garmin’s terrain-alerting database.
Can GPS and LightSquared coexist? Within the civil and military GPS community, the answer has been emphatically and unequivocally, “No.” Until last week, that is. Attendees at the annual convention of the U.S. Institute of Navigation held in Portland, Ore., had been confident that the laws of physics made coexistence of the two impossible.
Aspen Avionics introduced its Connected Panel system at the EAA AirVenture Oshkosh show in late July and expects the first applications to be available to customers by year-end. Connected Panel integrates certified avionics, in this case Aspen’s Evolution PFD and MFD glass-cockpit displays, with mobile devices. The first applications will be for the iPad; Aspen is planning Android apps as well.
LightSquared signed an agreement yesterday with Javad GNSS to develop a system that it claims will eliminate related interference issues between LightSquared’s planned 4G broadband network transmitters and high-precision GPS devices.
The former head of the New York State Police aviation unit has been charged with grand larceny for selling a state-owned Garmin 496 GPS to a fellow trooper. Retired Maj. Robert Kreppein is accused of selling the unit for $1,600 in 2008. Kreppein retired in July after media reports surfaced that he was being investigated for allegedly approving civilian flights on state police helicopters.
The FAA issued an amended supplemental type certificate for the VoiceFlight Systems VFS101, adding new units to the company’s approvals for voice command of Garmin GNS navigators. The amendment adds the GNS430W and 530W, allowing pilots to use speech command instead of knobs to control a wider variety of Garmin navigators.
The GPS industry’s failure to comply with the Department of Defense’s receiver filtering standards is the root cause of potential interference issues involving LightSquared’s proposed broadband wireless network, the company has told the FCC.
Low-powered incoming GPS signals are allocated 1559-1610 MHz in the L-Band radio spectrum. The neighboring spectrum–from 1525-1559 Mhz–is allocated to other, equally low-powered, incoming satellite signals, such as Sky Terra’s. GPS receivers are open to signals above the blue line shown, but filter out signals below it, and require modification to accept Glonass.