GLONASS

GLONASS Failure Inconsequential to Users, Says Russian Press

April 8, 2014By

Reports in the semi-official Russian news daily Izvestia indicate that finger-pointing has gotten underway regarding the April 1 GLONASS systemic blackout, which followed two other high-profile disasters, the destruction-upon-launch of three new GLONASS satellites in July 2013, and the Pacific drowning of three other satellites in December 2010. While we have neither full nor fluent translations from the Russian, we... read more

This article is tagged with , and posted in GLONASS, Latest News

GLONASS Blackout Coincides with Loran Authorization-in-Progress

April 8, 2014By

Russia’s April 1 GLONASS blackout occurred, ironically, only hours after the U.S. House of Representatives passed legislation to preserve infrastructure that could support a back-up system for GPS that could be used for critical infrastructure and applications in the event of a similar disaster occurring in the United States. The 2014 Coast Guard Authorization Act requires the Department of Homeland... read more

This article is tagged with and posted in Augmentation & Assistance, GLONASS, GPS Modernization, Latest News

Altus Positioning Systems Pinpoints Cause for GLONASS Default

April 4, 2014By

Regarding the April 1–2 11-hour downtime for the full GLONASS constellation, president and CEO Neil Vancans of Altus Positioning Systems provides this additional information: “From the reports on GLONASS problems, we have an explanation that may be used in our technical support replies: “Our analysis reveals the GLONASS integration algorithms skipped an interval of around 1.5 minutes at the control... read more

How to Survive a Total Constellation Outage

April 3, 2014By
Broadcom-O3

Yesterday we posted news of an 11-hour downtime for the full GLONASS constellation, due to an upload of bad ephemerides. Coincidentally, during that 11-hour period, the mass-market chip company Broadcom was conducting multi-constellation receiver tests in Asia. Frank van Diggelen, Broadcom’s chief GNSS scientist and vice president says, “We have definitive data to show how a multi-constellation receiver survives such... read more

GLONASS Gone . . . Then Back

April 2, 2014By
glonass_problem-O

In an unprecedented total disruption of a fully operational GNSS constellation, all satellites in the Russian GLONASS broadcast corrupt information for 11 hours, from just past midnight until noon Russian time (UTC+4), on April 2 (or 5 p.m. on April 1 to 4 a.m. April 2, U.S. Eastern time). This rendered the system completely unusable to all worldwide GLONASS receivers.... read more

The System: Galileo Countdown, PNT Advisory Board

April 1, 2014By

Galileo Countdown to 10 by Year’s End Signs Point Toward Early Services in December, If ESA Delivers A February conference on the European Union’s space policy in Brussels sought to set a course for 2020 and close official ranks behind the prospect of early Galileo services at the end of this year. Much in the business community’s perception of the... read more

Russia Launches another GLONASS-M Satellite

March 24, 2014By

Russia has launched another GLONASS-M satellite into space, reports Spaceflight Now. The launch occurred on Sunday. The Soyuz 2-1b rocket lifted off at 22:54 GMT (6:54 p.m. EDT) from the Plesetsk Cosmodrome about 500 miles north of Moscow. The GLONASS-M satellite, designated No. 54, was manufactured by ISS Reshetnev and is designed for a seven-year operational life. A spokesperson with... read more

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Hemisphere GNSS Vector Products Now Have GLONASS Functionality

March 11, 2014By

Hemisphere GNSS has announced that all professional-level Vector products — including the V103, V113, VS131, and VS330 — now include the ability to utilize the GLONASS system along with GPS in the navigation solution. The tracking of the additional GLONASS signals provides a more robust solution, especially in challenging environments, the company said. Vector Technology processes L1 GPS and GLONASS... read more