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High Horizontal Dilution of Precision 22-23 June 2018

High Horizontal Dilution of Precision 22-23 June 2018

Notice from US Coast Guard Users of the Global Positioning System (GPS) may experience a short period of high Horizontal Dilution of Precision (HDOP) / Position Dilution of Precision (PDOP) in the locations below at the times indicated due to satellite maintenance...

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Jamming GPS to Leave Work Early – Chronos Case Study

Jamming GPS to Leave Work Early – Chronos Case Study

Blog Editor's Note: GPS is an invisible utility that underpins most every networked technology. All nations must get better at preventing, detecting and stopping these kinds of disruptions. In Europe the STRIKE3 project's limited sampling has discovered 300 "jammer...

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Easily Spoofing Them All at Once – Inside GNSS

Easily Spoofing Them All at Once – Inside GNSS

Blog Editor's Note: There are some in the GNSS community who think that the only answer needed for resilience is use of multiple GNSS frequencies and/or constellations. This is problematic as all constellations use the same frequency band and can be easily jammed at...

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Parked Car Disrupts GPS Reception – NovAtel Case Study

Parked Car Disrupts GPS Reception – NovAtel Case Study

Blog Editor's Note: In a recent GPS World article on it's interference detection system, NovAtel included three examples of GPS signal disruption that have been detected by its system.  We enthusiastically support broad sharing of these kinds of case studies to...

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50,000 Euro Fines for Trucks with Jammers

50,000 Euro Fines for Trucks with Jammers

Blog Editor's Note: Government authorities around the world have been slow to address the problem of small GPS jammers because the negative impacts - dropped cell phone calls, temporary disruption of tracking and navigation services, slower networks - while...

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S. Korea to use eLoran for Autonomous Vehicles, Drones

S. Korea to use eLoran for Autonomous Vehicles, Drones

Blog Editor's Note: A recent article about South Korea's budding eLoran system and a presentation at the recent IALA Conference in Inchon is only available in Korean. The Google Translate version quoted from below clearly skews a couple ideas moving them from Korean...

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Russia, China Upgrading Loran/ eLoran Systems?

Russia, China Upgrading Loran/ eLoran Systems?

Western governments have generally shown little concern about GNSS vulnerabilities and their countries' critical dependence upon them. Not so for some others. Iran has announced that it has a Loran system to prevent its dependence on space. Saudi Arabia has had a...

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AF Looking to RF for PNT – 19 to 21 June Event

AF Looking to RF for PNT – 19 to 21 June Event

Blog Editor's Note: This could be an interesting event. It seems as thought it is structured around signals of opportunity, re-purposing existing RF wave-forms, and discovery of new signals for PNT. These certainly seem less expensive and more resilient that putting...

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eLoran in S. Korea – Status Report to IALA

eLoran in S. Korea – Status Report to IALA

Blog Editor's Note: The attached paper presented at a recent IALA meeting shows South Korea's eLoran project on schedule. While the UK eLoran system found 6 - 7 meter positioning accuracy, to date the S. Korean project has calculated 10m or less for many areas, but...

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Why We REALLY Need GPS

Why We REALLY Need GPS

Blog Editor's Note: Wishing everyone a wonderful Memorial Day holiday.  Keep in mind the sacrifices of the fallen and, if you are on the road, safe travels.  

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