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Lockheed Martin Global Positioning System Updates Enhance System Accuracy 10-15 Percent

Feb 1, 2006 gps navigation, misc news

Lockheed Martin has upgraded the software processing and modeling for the Air Force’s Global Positioning System (GPS), enhancing the Air Force’s ability to monitor GPS satellites and improve system accuracy 10-15 percent for users worldwide.

The recently completed update, named the Legacy Accuracy Improvement Initiative (L-AII), doubles the amount of navigation data collected and provided to Air Force operators.

The L-AII upgrade allows the integration of data from up to 14 National Geospatial Intelligence Agency (NGA) monitor stations with data from six existing GPS monitor stations. The L-AII update has incorporated improvements in a variety of scientific knowledge areas, including: numerical standards, geopotential, monitor station site displacement, tidal variations in the earth’s rotation, tropospheric delays, and satellite solar radiation pressure.

“With greater global coverage from the additional NGA monitor stations, operators will be able to monitor the GPS constellation in near real-time, allowing faster response to anomalies,” said John Mengucci, Lockheed Martin Vice President and General Manager of DoD Systems. “The 10 to 15 percent accuracy improvement will be advantageous to all GPS users and will not require any modifications to their GPS receivers. This program is truly a win-win for both the operators and the users.”… lockheed martin gps