Global Navigation Satellite Systems Engineering, Policy, and Design
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
Fushimi Inari Taisha, Kyoto, JapanThe 16th International Symposium On GNSS 2015 will be held November 16 – 19, 2015 at Miyakomesse in Kyoto, Japan.
ISGNSS 2015 will be co-located with the Asia and Pacific Rim meeting of the CGIC (Civil GPS Service Interface Committee) to help improve understanding of the world trends in developing and deploying GNSS. The program will include keynote addresses, oral presentations, interactive poster sessions, panel sessions, open interactive forums and a trade exhibition.
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.
GPS contributed more than $68 billion to the U.S. economy in 2013, according to the preliminary results of a new study presented to the National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board.
And the study’s author, Irv Leveson, a consultant to ASCR Federal Research and Technology Solutions, LLC, described that figure as conservative because it did not fully incorporate a host of GPS applications including those depending on GPS timing information.
By Inside GNSS
Block diagram of driver-assisted truck platooning (DATP) system. From “Heavy Truck Cooperative Adaptive Cruise Control” Phase 1 reportAlthough media coverage of autonomous or self-driving vehicles has focused on their use by private car owners, an initial report on driver-assistive truck platooning (DATP) highlights the prospects for their use in the commercial freight sector.
Titled “Heavy Truck Cooperative Adaptive Cruise Control — Evaluation, Testing, and Stakeholder Engagement for Near Term Deployment: Phase One Final Report,” the DATP project was funded by a grant from the U.S. Department of Transportation’s Exploratory Advanced Research program.
By Inside GNSS
Spirent Communications has unveiled its eCall and ERA-GLONASS In-Vehicle Systems (IVS) test solution to verify the functionality and protocol conformance of the eCall and ERA GLONASS–enabled vehicular systems. eCall and ERA GLONASS will soon become mandatory in new vehicles in Europe and Russia respectively.
By Inside GNSS
When the nation’s top GPS advisors meet next month they will announce their new chairman — a former defense official, welcome four other new members, and begin with a freshly renewed charter.
By Inside GNSSOne of the first feature articles I wrote as a newly minted GNSS magazine editor 26 years ago was about an advanced rail traffic management system based on GPS that Burlington Northern, with the help of Rockwell Collins, had designed and implemented.
By Inside GNSS
Registration has opened for the 22nd World Congress and Exhibition on Intelligent Transport Systems and Services to be held in Bordeaux, France, on October 5–9, 2015.
By Inside GNSS
Francisco Rovira-Más, Agricultural Robotics Laboratory, Universidad Politécnica de ValenciaNow that we have had GNSS-driven precision in the fields for nearly 20 years, with widespread and growing acceptance by farm vehicle manufacturers and farmers, what lies ahead for precision agriculture?
By Inside GNSS
Global navigation satellite systems provide position, velocity, and time (PVT) solutions to users whose receivers calculate position based on one-way ranging from satellites. As is well-understood, a key step in the positioning process involves a determination of the difference between the time of signal transmission identified in the satellite’s broadcast navigation message and the time of its reception by user equipment.
By Inside GNSS
