GNSS

Japan readies second Michibiki satellite for QZSS

April 10, 2017By

The second satellite in the Japanese Quasi-Zenith Satellite System (QZSS) is scheduled for launch in June. QZSS will be a satellite augmentation system for GPS in the region of Japan. The first Michibiki satellite was launched Sept. 11, 2010. Michibiki 2 will be launched aboard H-IIA Launch Vehicle No. 34 from Mitsubishi Heavy Industries Ltd., according to the Japan Aerospace... read more

Russia commissions GLONASS station in Nicaragua

April 7, 2017By

On April 6, Russia commissioned a new GLONASS ground station in Managua, Nicaragua — its first in Central America. The station was created under a Jan. 26, 2012, agreement between the two countries to cooperate in the exploration and use of outer space for peaceful purposes. GLONASS consists of 24 satellites orbiting at a medium height of 19140 km in three planes with inclination of... read more

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Galileo search-and-rescue service officially launched

April 6, 2017By

The Galileo Search And Rescue (SAR) service, made possible by the Galileo satellite constellation, is now active. Galileo SAR is Europe’s contribution to the COSPAS-SARSAT network, a distress alert detection and information distribution system best known for detecting and locating emergency beacons activated by aircraft, ships and hikers. By providing COSPAS-SARSAT with the coverage capacity of the Galileo constellation equipped... read more

U.S. Air Force puts more power into GPS Block IIR-M C/A-code

April 1, 2017By

By Peter Steigenberger, André Hauschild, Steffen Thoelert and Richard B. Langley Between Feb. 7, 05:02 UTC and Feb. 8, 12:30 UTC, 2017, all seven operational GPS Block IIR-M satellites were consecutively subject to short periods of unavailability. These official outage periods, when the satellite signals were set unhealthy and deemed unusable, were announced ahead of time through Notice Advisories to... read more

GSA contracts with Eutelsat on next-gen EGNOS payload

March 29, 2017By

The European Global Navigation Satellite Systems Agency (GSA) has selected Eutelsat Communications for the development, integration and operation of the next-generation EGNOS payload on a future Eutelsat satellite. Eutelsat and GSA have concluded a long-term contract valued at €102 million covering the preparation and service provision phases for the EGNOS GEO-3 payload that will be hosted on the Eutelsat 5... read more

Top-level updates from Munich summit on four GNSS

March 22, 2017By

Here’s a panorama in broad strokes across the range of GNSSs, garnered from top system spokespersons at the Munich Satellite Navigation Summit. It’s been several years since breaking news was aired at this annual late winter/early spring event, but it’s always good for a wide-ranging update, recalibrating levels, so to speak. GPS. With 31 operational satellites (24 is baseline) and... read more

Research: Assessment evaluates GNSS receivers’ tolerance of adjacent band

March 22, 2017By

By Stephen Mackey, Hadi Wassaf, Karen Van Dyke, Christopher Hegarty, Karl Shallberg, John Flake and Terence Johnson. The Adjacent Band Compatibility Assessment evaluated the adjacent radiofrequency band power levels that can be tolerated by GPS and GNSS receivers, to advance the U.S. Department of Transportation’s understanding of the extent to which such power levels impact devices used for transportation safety... read more

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EGNOS satellite messages changing this month

March 15, 2017By

The GEO satellites broadcasting EGNOS messages are going to be changed. On March 20, PRN 123 (now in test) will be introduced in the operational platform, and on March 21, PRN 136 will be moved from the operational platform to the test platform. Users equipped with non-(E)TSO-certified SBAS receivers (such as those used in agriculture, surveying, mapping and maritime, but... read more

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