GNSS

Following the Team into Danger

June 1, 2013By
Ma-opener

When a team of firefighters, first responders, or soldiers operates inside a building, in urban canyons, underground, in foliage, or under the forest canopy, the GPS-denied environment presents unique navigation challenges. An enhanced personal inertial navigation system (ePINS), based on a strapdown navigation solution using a mid-grade IMU and wavelet-based motion-classification algorithms, can track positions with errors of less than 2 percent of distance traveled in both indoor and outdoor environments. read more

The System: Galileo Leaves the Building

June 1, 2013By
Galileo-OHB-FOC-Opener

In the early hours of May 15, Galileo’s first full operational capability (FOC) satellite left manufacturer OHB System AG’s integration hall in Bremen, Germany, after successfully completing integration and system testing. Later that same day, it arrived by road at the European Space Agency’s (ESA’s) technical center at Noordwijk in the Netherlands for a rigorous set of tests to check... read more

This article is tagged with and posted in Galileo, GLONASS, GPS Modernization, The System

GPS OCX Ground Control in GAO Report

May 30, 2013By
The next-generation GPS ground-control system, known as OCX.

A March 2013 report from the Government Accountability Office (GAO) seems to claim that the projected cost of the next-generation GPS ground-control system, known as OCX, increased by 43 percent, or $1 billion over the past year, to a total cost estimate of $3.7 billion. As GPS World contributing editor Don Jewell wrote shortly after the GAO release, “In fact,... read more

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

CNES Computes Real-Time Decimeter-Accuracy Orbits with Galileo

May 30, 2013By
image001

The first four Galileo satellites used for in-orbit validation were launched in October 2011 and October 2012.They are now transmitting their signals on an operational basis. Thanks to the simultaneous use of these four satellites, the European Space Agency was able to compute the first autonomous Galileo-only fix using broadcast ephemerides in March 2013. Using data from the real-time service... read more

This article is tagged with and posted in Galileo, GNSS News, Latest News

Update: GPS IIF-4 Successfully Launched from Cape Canaveral

May 24, 2013By
Centaur upper stage with the payload still attached. Photo credit: Andy Smith

UPDATE, May 24, by Richard Langley: The Centaur upper stage with the payload still attached was photographed from Tavistock, Devon, in the U.K. by Andy Smith. As can be seen from the ground trace figure in an earlier GPS World news item, the Centaur passed over the U.K. following MECO1, the first main engine cutoff. From Europe, the Centaur could... read more

This article is tagged with and posted in Aviation & Space, GNSS News, Government News, GPS Modernization, Latest News

Beidou to Ensure Information Security

May 24, 2013By

The chief designer of the BeiDou Navigation Satellite System said China will advocate the use of the system, which will be compatible with new devices, “so that Beidou can function properly and independently even if something goes wrong with the GPS.” Sun Jiadong, chief designer of BDS and an academician of the Chinese Academy of Sciences, made his comments in... read more

This article is tagged with and posted in Aviation & Space, BeiDou/Compass, Defense News, GNSS News, Government News, Latest News

Galileo Takes Center Stage at Fourth ESA Colloquium

May 24, 2013By

The fourth International Colloquium on Scientific and Fundamental Aspects of the Galileo Programme will be held in Prague, Czech Republic, December 4–6. Since 2007, the worldwide scientific community has met every two years to discuss the possibilities for boosting the scientific use of Galileo and for contributing to the development of the GNSS. The event is always organized in one... read more

This article is tagged with and posted in Galileo, GNSS News, Latest News

First Galileo FOC Satellite Heads to Testing

May 15, 2013By
Galileo-OHB-FOC-Opener

In the early hours of May 15, Galileo’s first full operational capability (FOC) satellite left the manufacturer’s integration hall in Bremen, Germany. The satellite, assembled by OHB System AG, is now headed for Noordwijk in the Netherlands, where it will undergo an environmental testing campaign and further system testing at the ESTEC’s Test Center on the premises of the European Space... read more

This article is tagged with , and posted in Galileo, GNSS News, Latest News