GNSS

Second Wayward Galileo FOC Moving Higher

January 20, 2015By
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At a press conference on Jan. 16, Director General Jean-Jacques Dordain of the European Space Agency (ESA)  announced that the second errant full-operational capability (FOC) satellite, launched in August, had started its orbital change maneuver the previous day. He anticipated that the orbital change would be completed and the final orbit — “albeit somewhat lower in height than the one... read more

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Six Galileo Satellites Planned for 2015 Launch

January 20, 2015By

Six Galileo satellites are scheduled to be launched this year, European Space Agency (ESA) Director General Jean-Jacques Dordain said on January 16. “The launch of six satellites is scheduled for 2015. The [European] Commission will determine the terms of the launches at the end of January,” Dordain said at a press briefing. The satellites will be put into orbit by Ariane... read more

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Galileo Service Interruption Planned for System Upgrade

January 19, 2015By
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Galileo’s navigation messages will shortly stop being updated to enable the migration of a new release for Galileo’s ground mission segment, announced the European Space Agency. Although the actual navigation signals will continue to be transmitted, the generation and uplink of the navigation message — which renews the contents of the signal — will be interrupted during the last week of January... read more

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Terry Moore Considers Future of GNSS in RIN Lecture

January 15, 2015By

Professor Terry Moore explores “Where next for GNSS? ” in the Anderson Memorial Lecture at the Royal Institute of Navigation on March 2. Moore is the associate dean for infrastructure and director of the Nottingham Geospatial Institute, Faculty of Engineering, at the University of Nottingham. Moore will review the current status and proposed modernization of GPS with an emphasis on the benefits... read more

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PNT Board Report: GPS Critical Infrastructure, Concern over International Signals

January 13, 2015By

Report on the 14th meeting of the National Space-based PNT Advisory Board in Washington, D.C., held December 10-11, 2014. By Ron Hatch The December meeting of the PNT Advisory Board meeting brought forth important developments and proposals for the protection of GPS as part of the U.S. critical national infrastructure. A separate presentation made by speakers from the National Telecommunications... read more

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Severe Weather Study Shows Potential of GNSS-RO Satellites

January 11, 2015By
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GeoOptics, a satellite-based environmental data services company, in cooperation with Atmospheric and Environmental Research (AER), an environmental research and development company, has announced the initial results of an Observing System Simulation Experiment (OSSE) showing the reliability of radio occultation data in improving predictions of severe weather and flash flood events. read more

Block II GPS Satellite Retires after 22 Years

January 9, 2015By

Jan. 6 was the last day of service for GPS satellite SVN-26. SVN-26 was a Boeing/Rockwell International Block II GPS satellite launched July 7, 1992. It was one of the first generation of operational GPS satellites, and had a design life of only 7.5 years. On Jan. 7, SVN-26 (PRN-26) was transferred from the operational ground control system (AEP) to Launch,... read more

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Glowing Orbs Reveal Presence of GPS

January 8, 2015By
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Designer Timo Arnall has created lamps that change brightness depending on the strength of received GPS signals. The glowing orbs were made with Einar Sneve Martinussen and Jørn Knutsen as part of a research project at the Oslo School of Architecture and Design. The research began in 2009 with RFID and Wi-Fi projects that aim to reveal technology in a visual way. “GPS is widely used, yet... read more

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