November’s Galileo satellites arrive at Europe’s spaceport

September 9, 2016By

A transatlantic flight delivered four Galileo satellites to French Guiana on Tuesday, in preparation for a shared launch this November by Ariane 5 — the first for Europe’s satnav constellation. read more

McMurdo launches emergency beacons with GPS, GLONASS, Galileo

September 7, 2016By
The McMurdo SmartFind and Kannad SafePro distress beacons support beacon transmission, GNSS for location positioning, and AIS for localized connectivity.

Emergency preparedness company McMurdo has launched a new family of Emergency Position Indicating Radio Beacons (EPIRBs) that will accelerate the search-and-rescue process by combining multiple frequencies — including GNSS — into a single EPIRB product. The McMurdo SmartFind and Kannad SafePro EPIRBs are distress beacons that can support each of the four frequencies used in the search-and-rescue process: GNSS for location positioning, 406 MHz and... read more

Multi-GNSS, multi-PNT testing: Q&A from our signal simulation webinar

September 6, 2016By

The “Signal Simulation and Testing: Fundamentals and New Frontiers” webinar, held March 10, generated in-depth Q&A, printed in part here. Inertial positioning can be tested with GNSS. Download full webinar free. Question: What is the toughest multi-constellation performance parameter to meet? John Fischer, Spectracom. In the multi-constellation environment, having to test for synchronization between the different constellation presents a challenge.... read more

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GNSS, radars assist in all-weather vehicle positioning

September 6, 2016By

Everyone talks about the weather, but nobody does anything about it — right? Our lead authors this month are doing something about it. The July cover story of GPS World magazine was titled “See into the Smoke with Inertial.” This month’s feature could have been called “See into the Fog with CDGNSS,” but we just didn’t have room in the... read more

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Innovation: Galileo cycle-slip detection

September 1, 2016By and
FIGURE 3.  Statistical and absolute thresholds.

How four frequencies help when the ionosphere is disturbed The authors explore how cycle slips in Galileo carrier-phase measurements can be more effectively detected using four frequencies. MORE SATELLITES OR MORE SIGNALS? That was the question put to the delegates at GNSS Election ’08, the stimulating and amusing entertainment provided at the GPS World Leadership Dinner held in conjunction with The... read more

Public meeting set for Navstar GPS documents

August 29, 2016By

The U.S. Air Force is holding a 2016 Public Interface Control Working Group and Open Forum for the Navstar GPS public documents Sept. 21-22 in El Segundo, California. The meeting is intended to update the public on GPS public document revisions and collect issues and comments for analysis and possible integration into future Navstar revisions. The forum will be held for the following documents:... read more

Expert Opinions: Buyers’ need for GNSS receiver testing, certification

August 29, 2016By

Q: Buyers get little guidance as to how specific receivers react to interference, particularly in critical infrastructure. Is there a need for receiver testing and certification along the lines of Underwriters Laboratories to guide purchase and acquisition? A: Exhaustive “seven-nines” testing and verification is expensive, takes a long time and stymies innovation. Yet simple and pragmatic testing can reveal faults... read more

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GPS anti-jam increasingly big business

August 29, 2016By

It’s getting bigger all the time, GPS/GNSS business. And coming along in its wake, starting to grow like a sproutly little brother, is GPS anti-jamming, to safeguard the signal in various scenarios. The anti-jamming market for GPS is expected to reach US$4.8 billion in value and 309.2 thousand units in volume by 2022, according to a newly released report by... read more