Spectrum Interference Standards

On January 13, 2012, the U.S. National Positioning, Navigation, and Timing Executive Committee (PNT EXCOM) met in Washington, D.C., to discuss the latest round of testing of the radiofrequency compatibility between GPS and a terrestrial mobile broadband network proposed by LightSquared. The proposed...

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Bibliographic Details
Published in:GPS world 2013-01, Vol.24 (1), p.59-66
Main Author: Hegarty, C J
Format: Magazinearticle
Language:English
Subjects:
Bands
Global Positioning System
Interference
Navigation
Networks
Satellite navigation systems
Transmission
Online Access:Get full text
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Summary:On January 13, 2012, the U.S. National Positioning, Navigation, and Timing Executive Committee (PNT EXCOM) met in Washington, D.C., to discuss the latest round of testing of the radiofrequency compatibility between GPS and a terrestrial mobile broadband network proposed by LightSquared. The proposed network included base stations transmitting in the 1525 - 1559 MHz band and handsets transmitting in the 1626.5 - 1660.5 MHz band. These bands are adjacent to the 1559 - 1610 MHz radionavigation satellite service (RNSS) band used by GPS and other satellite navigation systems. Based upon the test results, the EXCOM unanimously concluded that "both LightSquared's original and modified plans for its proposed mobile network would cause harmful interference to many GPS receivers," and that further "there appear to be no practical solutions or mitigations" to allow the network to operate in the near-term without resulting in significant interference.
ISSN:1048-5104