Global Navigation Satellite Systems Engineering, Policy, and Design
Google has agreed to integrate into its mapping services geographic information system (GIS) data from the Federal Railroad Administration (FRA) that pinpoints the location of the nation’s approximately 250,000 public and private railroad crossings.
By Inside GNSS
As usual, a leap second that will be introduced into the coordinated universal time (UTC) system at 11:59 p.m. tonight (June 30, 2015) may cause some difficulties with devices and services that derive UTC via the Global Positioning System.
By Inside GNSS
Valérie Renaudin’s Compass Points
Geomatics engineer Valérie Renaudin now directs a major research laboratory in Nantes, France, working on the future of personal navigation and intelligent transportation systems (ITS).
By Inside GNSS
Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.
Computational power continues to increase at a rapid pace and unlike other areas of technology, this trend is not expected to slow down in the foreseeable future. Software GNSS receivers fully exploit these developments to steadily increase performance.
By Inside GNSS
The availability of several GNSSes promises advanced positioning, navigation, and timing services with higher availability and improved accuracy. According to a European GNSS Agency (GSA) market study, nearly 60 percent of receivers, chipsets, and modules already support at least two GNSS constellations, showing that multi-constellation is becoming a standard feature across all market segments. That development brings up questions of law and regulation that require careful handling by GNSS manufacturers, service providers, and policy makers.
By Ingo Baumann
A few studies (by universities and industry) have shown the feasibility of simulation of real-time digital intermediate frequency (IF) signals based on a graphics processor unit (GPU). And a couple of articles have also demonstrated use of a universal software radio peripheral (USRP)–based software-defined radio (SDR) as a simulator (in playback mode) in real test environments.
By Inside GNSS
Figure 1The Indian Regional Navigation Satellite System (IRNSS) is an Indian Space Research Organisation (ISRO) initiative to build an independent satellite navigation system that provides precise position, velocity, and time (PVT) to users across the Indian region.
The primary objective of IRNSS is to achieve position accuracy of 20 meters (2σ) for dual-frequency users over India and the primary service area (a region extending to about 1,500 kilometers or 930 miles).
By Inside GNSS
Rizzi Haus, Braunschweig, GermanyThe fifth international colloquium on scientific and fundamental aspects of the Galileo program will take place at the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, Germany from October 27 – 29, 2015.
Early registration ends September 17, 2015. Abstract submission has ended.
By Inside GNSS
Casa Battló, Passeig de Gràcia, Barcelona, SpainThe European Space Agency (ESA) International Summer School on GNSS 2014 take place August 31 – September 10, 2015 at Hotel Alimara, Barcelona, Spain.
Held in conjunction with the European Commission Joint Research Center’s Summer School on GNSS, the program is open to graduate students (with a first university degree), Ph.D. candidates, early-stage researchers, and young professional seeking to broaden their knowledge.
By Inside GNSS
SatGen V3 software now available for use on LabSat 3 simulatorsLabSat has launched a new version of its SatGen V3 software package that enables users to create scenarios for replay through any LabSat simulator and now includes BeiDou.
The software creates either user-generated or imported trajectory files for use with a LabSat GNSS simulator. The addition of the BeiDou B1 signals means that users can now test a device’s design and performance as if it were being used within the operating area of the Chinese GNSS constellation – which at present only provides full coverage in Asia.
By Inside GNSS
eLoran signalWith worries mounting about jamming and other disruptions of GPS signals, officials took a step Friday (June 19, 2015) toward possibly establishing a backup for satellite navigation users in the United States.
By Inside GNSS
Golf fans watching televised coverage of the U.S. Open golf tournament will have a new outlook on what the professional golfer is facing, thanks to a camera and augmented-reality tracking system that includes a 1750 inertial measurement unit (IMU) from KVH Industries, Inc., of Middletown, Rhode Island.
NovAtel G-III WAAS Reference ReceiverNovAtel Inc. today (June 17, 2015) announced an agreement with NEC Corporation to supply reference receiver products for use in Japan’s Quazi-Zenith Satellite System (QZSS).
The QZSS equipment will be based on NovAtel’s third-generation (G-III) family of reference receivers. Designed for integrity monitoring and reference measurement applications, the receivers track signals independently to provide precise code and carrier phase reference measurements as well as signal-quality measurements and other integrity monitoring metrics.
