Global Positioning System

January 22, 2008 - 8:28am

Officials for Jeppesen report that the company has identified and corrected many of the irregularities in its NavData boundary data, but at press time about 350 of the more than 20,000 boundaries included in the latest update of the database, effective March 20, had not yet been fixed. The error arose from problems with a software upgrade when data was pulled from a database containing airspace boundaries worldwide for the March update.

January 22, 2008 - 6:13am

The FAA awarded a contract to Lockheed Martin last month that will add a third leased geostationary satellite to the two existing satellites used for the wide-area augmentation system (WAAS). Acquisition of a third satellite follows a recommendation from an independent review board study that concluded it was too risky to depend on only two satellites for the availability of the WAAS signal.

January 22, 2008 - 6:13am

The FAA awarded a contract to Lockheed Martin last month that will add a third leased geostationary satellite to the two existing satellites used for the wide-area augmentation system (WAAS). Acquisition of a third satellite follows a recommendation from an independent review board study that concluded it was too risky to depend on only two satellites for the availability of the WAAS signal.

January 14, 2008 - 11:33am

The combination of GPS position, digital communications networks and the Internet has made possible–and affordable–a variety of products and services for continuous real-time tracking of aircraft fleets by dispatchers on the ground. Nowhere has such capability been more eagerly accepted than in the realm of helicopter flight operations, many of which are now using data-link services to keep close tabs on their aircraft at all times.

January 14, 2008 - 10:28am

The FAA has certified an IFR WAAS receiver developed by UPS Aviation Technologies, the key ingredient in a forthcoming line of satellite navigation equipment from the Salem, Ore. avionics maker.

January 11, 2008 - 4:50am

The FAA is proposing numerous revisions to IFR flying to reflect the technological advances intended to “facilitate the transition from ground-based navigation to new reference sources,” principally GPS. For example, the middle marker would be dropped as a required component of the ILS.

January 9, 2008 - 5:56am

While the GPS wide-area augmentation system (WAAS) is likely to be commissioned for public use in July, the local-area augmentation system (LAAS) has fallen back by 12 months, with commissioning of the first installation now forecast in late 2005. This setback for LAAS was revealed to attendees at a December briefing given by FAA’s Satellite Operational Implementation Team (SOIT).

January 9, 2008 - 5:26am

Rockwell Collins has gained the first-ever TSO approval for a multi-mode receiver with microwave landing system (MLS) capability. Besides MLS, the receiver integrates VOR, ILS, marker beacon and GPS. Cat III MLS approaches are in use at a handful of European airports, most notably London Heathrow. The precision navigation concept has also been adopted by the military for set-up of “portable” precision approaches anywhere in the world.

January 9, 2008 - 5:24am

Garmin announced the availability of fault-detection and exclusion (FDE) software for its GNS 430/530 GPS/navcom radios. According to a spokesman, FDE uses a mathematical algorithm to monitor the accuracy and reliability of GPS signals. Designed to detect erroneous GPS data, the software automatically excludes that data from the active navigation solution.

December 18, 2007 - 7:47am

It took several years for the U.S. and the European Union to reach agreement about satellite navigation systems, but the cooperation agreement the parties signed in June that paves the way for the Galileo and GPS satellite navigation systems should be beneficial to both sides, and to aviation worldwide.

 
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