GNSS

Indian space agency asks industry to build spare satellites

September 9, 2016By

The Indian Space Research Organisation (ISRO) is finalizing plans to have two spare satellites for its navigation fleet built by private industry in the next two years, reports The Hindu. The seven-satellite NAVIC (Navigation Indian Constellation) — formerly known as IRNSS — is now complete. The Indian government will “handhold” industry for the first satellite, scheduled to be built by March 2017. The second satellite will... read more

This article is tagged with , , , and posted in GNSS, Latest News

November’s Galileo satellites arrive at Europe’s spaceport

September 9, 2016By
galileos_on_the_road_o

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

This article is tagged with and posted in GNSS, Opinions

GNSS, radars assist in all-weather vehicle positioning

September 6, 2016By
vehicle-ADAS-fog

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

This article is tagged with , , , , and posted in GNSS, Opinions, Transportation

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. 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
Dana-Goward

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

This article is tagged with , , and posted in GNSS, Opinions