GNSS

GLONASS-M Satellite to Launch June 14

June 9, 2014By
glonass_M-launch-O

GLONASS-M satellite number 55 is planned for launch on June 14 from the Plesetsk cosmodrome, said the first deputy director Viktor Kosenko as reported by Interfax.ru. Kosenko said that through 2020, 25 more GLONASS satellites are planned: 11 GLONASS-M, 10 Glonass-K1, and four Glonass-K2. At the same time, he said, one GLONASS-K1 spacecraft is in orbit undergoing flight tests. GLONASS-M... read more

This article is tagged with and posted in Featured Stories, GLONASS, GNSS News

Russia Turns IGS Data Back on — Sort of

June 5, 2014By

On June 2, GPS World reported that GPS tracking stations co-sponsored by U.S. interests but located in Russia had stopped making their data available to scientists and others. Now, “It looks like the tap has been turned back on, at least at slow flow,” reports Richard Langley, GPS World Innovation editor and University of New Brunswick professor. “Hourly and daily... read more

Russia Turns off Data from IGS GPS Tracking Stations

June 2, 2014By
Russia-IGSstations-O2

As announced by Russian Deputy Prime Minister Dmitry Rogozin on May 13, 2014, GPS tracking stations co-sponsored by U.S. interests have stopped making their data available to scientists and others. The tap on the flow of data from 11 stations was turned off starting on May 31. The data flow included hourly and daily data files from the stations as... read more

Innovation: The European Way

June 1, 2014By
FIGURE 1. Global vTEC map obtained with the NeQuick electron density model for a sunspot number of 150 at 13h UT in the month of April (grid resolution 2.5 degrees × 2.5 degrees).

Performance of the Galileo Single-Frequency Ionospheric Correction During In-Orbit Validation
In this month’s column, a team of researchers from ESTEC describe the European way for modeling the ionosphere for single-frequency users and compare its performance to the current GPS approach. read more

This article is tagged with and posted in From the Magazine, Innovation, Signal Processing

Expanding Our System of Systems

May 30, 2014By

Putting GNSS into use within much larger aggregates of systems shows the greatest promise yet for earthly good. Goodness knows, we have experienced plenty of benefit from GPS applied over 25+ years, from back-up and fill-in provided by GLONASS, and with further synergy anticipated from Galileo and BeiDou.  But we ain’t seen nothing yet. Two presentations this month at the... read more

This article is tagged with and posted in GNSS Opinions, Newsletter Editorials

Test Shows Galileo Increases Accuracy of Location-Based Services

May 27, 2014By

The European GNSS Agency (GSA) and Rx Networks Inc., a mobile location technology and services company, announced the results of tests conducted by the company measuring the performance of Galileo when used in various combinations with GPS and GLONASS. Tests were conducted in real-world environments, including urban canyons and indoors. These environments pose significant challenges to location accuracy due to multipath... read more

GPS/GLONASS Dispute: CEO Clarifies Misunderstandings

May 23, 2014By
LD-Javad

“Use any opportunity to create friendship and peace,” urged Javad Ashjaee, president and CEO of JAVAD GNSS, in a May 23 conversation with journalists. He decried the recent controversy about monitoring stations on both U.S. and Russian soil, saying it was based in misinformation and misinterpretations, inflated by a political crisis in a completely different area. “This [GNSS] is a... read more

GPS IIF-6 Launch Tracked by GPS, Not Radar

May 19, 2014By

Friday’s launch of a Delta 4 rocket carrying the latest GPS satellite was tracked via GPS itself instead of by radar, reports Spaceflight Now in an article. United Launch Alliance’s Atlas and Delta rockets are transitioning to GPS metric tracking for range safety functions, which protect the public and property should a launch vehicle veer off course. The move is a... read more