Global Navigation Satellite Systems Engineering, Policy, and Design
Trimble has announced a “preview” version of its CenterPoint RTX post-processing service, enabling GNSS observations using available Galileo and BeiDou Middle Earth Orbit (MEO) satellites.
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
A group of top frequency experts recommended last week that the Federal Communications Commission (FCC) conduct a pilot test of the concept of “harm claim thresholds” (HCTs), an approach that requires receiver manufacturers to build devices capable of withstanding a predetermined level of interference from users in adjacent frequencies.
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 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 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
I Fell In Love With GNSS When . . .
“Two GNSS-related experiences really impressed me as a young professional and that I’ve never forgotten. The first involved adjusting a GPS-supported (GPS aerial control) aerial triangulation. By getting rid of most ground control points we managed to produce new results.
By Inside GNSS
Despite the continued decline in sales of portable navigation devices (PNDs) and the alternative solutions from smartphones, smart watches and eyewear, the portable GPS-enabled device market is anticipated to continue to hold its own thanks to dedicated heads up display/eyewear, cycling, and health/tracking devices, according to a market research company.
By Inside GNSS
At a time when more and more services rely on GNSS for timing, navigation, or location comes the burgeoning realisation that unencrypted, civilian GNSS is vulnerable to accidental interference or malicious meddling.
That the hoaxing of GPS receivers is a reality and not a distant science-fiction threat has been underlined in a typically 21st century way, by disclosures on social media such as youtube.
By Inside GNSS
First I thought to title these comments, “Learn from the People,” but readers might have confused me with Chairman Mao. (I spent some time recently around the Yangtze River, although I didn’t take the opportunity to swim in it as the Great Helmsman did.)
In any case, my thoughts turned toward the masses and the mass market as a result of working with the authors of an article in this issue on cooperative authentication. They have extended a chain of innovative proposals drawing on the crowdsourcing concept of data sharing among nearby GNSS users or “peers.”
By Inside GNSS
This will be the 26th international technical meeting of the Satellite Division of the Institute of Navigation. It is the world’s largest and oldest GNSS conference, founded in 1987 as the ION GPS conference.
The 2014 European Navigation Conference and exhibition will be held at the World Trade Centre (WTC) in downtown Rotterdam, Netherlands on April 15, 16 and 17, 2014. It will focus on positioning navigation and timing (PNT) technology, innovation and business applications. The technical sessions will cover all aspects of PNT developments and applications.
The deadline for abstracts is December 31, 2013
Online registration is open. Early bird registration ends February 15, 2014.
Topics include:
By Inside GNSS
SIDEBAR: 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
