Global Navigation Satellite Systems Engineering, Policy, and Design
This webinar took place on November 13, 2013.
Webinar Presentation Slides
Autonomy, but at what price?
By Inside GNSS
Hemisphere GNSS has launched the Eclipse P306 and P307 multi-frequency GPS, GLONASS, and BeiDou modules, the first products to incorporate the company’s new SX4 ASIC.
With 372 channels, the modules can simultaneously track code and carrier phase signals on up to 89 satellites, are are Galileo- and QZSS-ready, and can be configured to address several diverse applications through software, according to the company.
By Inside GNSS
JAVAD GNSS has introduced the Triumph-LS, a complete real-time kinematic survey system including an 864-channel receiver capable of receiving and processing all available GNSS signals, antenna, radio modem, controller, and collapsible pole. The receiver is based on JAVAD GNSS’s new Triumph 2 chip.
Trimble BD930 GNSS ModuleTrimble has introduced its BD930 module as part of its GNSS OEM portfolio.
This small module features triple-frequency support for GPS and GLONASS plus dual-frequency support for BeiDou and Galileo constellations. Capable of receiving a wide range of commercially available GNSS signals, the 220-channel BD930 takes advantage of all available signals to provide reliable RTK centimeter-level positioning.
Spirent GSS6425 Record and Playback SystemSpirent Communications has unveiled a new system for recording real-world GNSS RF signals and replaying them in the lab.
“Record and Replay” is popular as a more rigorous — and, crucially, repeatable — approach to GPS and GNSS testing than using live signals in real time, where satellite positions and atmospheric conditions are constantly changing.
By Inside GNSS
Air Force officials should get more cost and user information and determine how many GPS satellites they will support before making decisions about revamping the navigation system, the Government Accountability Office (GAO) has told Congress.
Although an Air Force report about program options was “a good starting point, more information on key cost drivers and cost estimates, and broader input from stakeholders would help guide future investment decisions,” the GAO wrote in an assessment of the defense agency’s analysis.
By Inside GNSS
BeiDou-2 Is Born
The year before the main release, China surprised the global community when it published just a test version of the promised ICD for the BeiDou-2 B1 open signal. In this document, the modulation scheme for the signal was confirmed and the pseudorandom code generator for the ranging signal was described.
Miguel Ortiz is a research engineer at GEOLOC Laboratory from IFSTTAR, the French institute of science and technology for transport, development, and networks.
He received his M.Sc. degree in mechanics, automation, and engineering from Ecole Nationale Supérieure d’Arts et Métiers. He joined the lab after six years spent in a company where he managed systems architecture for automotive applications.
By Inside GNSS
Lockheed Martin and Raytheon Company have successfully completed the third of five planned exercises to demonstrate the launch readiness of the U.S. Air Force’s next generation GPS III satellite and operational control system (OCX).
By Inside GNSS
Q: What is the effect of user and CORS height on NRTK performance?
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.
By Inside GNSS
Ismael ColominaSIDEBAR: Ismael Colomina’s Compass Points
Ismael Colomina began his career in 1982. “So, in a way,” he says, “I grew up as a professional at the same time GPS was growing up and maturing. GNSS has always been present in my working life; so, I never experienced the ‘GNSS, aha!’ moment. Rather, I never stopped thinking ‘GNSS, of course!’"
By Inside GNSS
NASA satellite photo shows northward drift of smoke from wildfires near Yosemite National Park.Better known for supporting U.S. troops in firefights in Afghanistan firefights, a Predator drone has been deployed to help California National Guard firefighters battle wildfires raging around Yosemite National Park.
U.S. Department of Defense Secretary Chuck Hagel approved the use of a GPS-guided MQ-1 Predator to support firefighters battling the Rim Fire that has expanded to more than 160,000 acres, accordeing to Air Force Lt. Col. Thomas Keegan, California National Guard public affairs officer.
By Inside GNSS
