Jamming GPS to Leave Work Early – Chronos Case Study

June 20, 2018

Written by Editor

Police Follow Me

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 families,” 50,000 GPS denial events, and hundreds of thousands of interference events.

We continue to be disappointed we don’t see more reports like this out of the Untied States.

Thanks to Chronos Technology for making these case studies available.

Identifying Employee Jamming Fleet Tracking System to Leave Work Early

In early January 2018 Gloucestershire Constabulary traffic officers were travelling in a marked car northbound on the M5 between junctions 12 and 11A when their Chronos CTL3520 GPS jamming detector was activated by a vehicle on the southbound carriageway. The officers turned at junction 11A, travelled south and caught up with the vehicle which was a works van. The van was still activating the jamming detector as the officers pulled in front and displayed their “Follow Me” matrix board. The van followed the police officers into Gloucester South Services Area. As it entered the  services, it triggered the JammerCam™ which photographs passing vehicles carrying activated GPS jammers.

READ MORE

What Can YOU Do? How Can YOU Help?

PNT is the quiet backbone of everything but too many leaders still don’t see the risk.

But you do. You understand the systems, the dependencies, the failure chains. That insight is rare — and it’s exactly what your country needs right now. Contact your government leaders and industry decision-makers and tell them resilient PNT isn’t a feature — it’s the foundation everything else depends on.

Start the Conversation

Use our Resilient PNT Key Talking Points to make the case.

U.S. Advocates

Find your representatives at Congress.gov, then use our email template to reach them in minutes.

When you get a response, let us know. Every conversation strengthens the mission.

More PNT News

PNT cyber guidance update – NIST wants your input

PNT cyber guidance update – NIST wants your input

Image: RNT Foundation What's new: Draft updated PNT cyber guidance from NIST. They are seeking public comment and input. Why it's important: PNT and cyber are well intertwined. PNT is an essential tech infrastructure so protecting it from malicious cyber effects is...

GPS Is Not Guaranteed: Impact on ports (Webinar 21 May)

GPS Is Not Guaranteed: Impact on ports (Webinar 21 May)

Image: Shutterstock What's new: A webinar featuring our colleague Matt Shirley. Matt is a professional port pilot and has some interesting insights on maritime reliance on GPS/GNSS, how things could go wrong without resilient PNT, and how things could go better with...

Intl Airline Pilots Assn calls for changes & GPS backup

Intl Airline Pilots Assn calls for changes & GPS backup

Image: Aircraft near Delhi, India being spoofed 5 Nov 2025 - GPSWise What's new: The International Federation of Air Line Pilots’ Associations (IFALPA) called for actions to combat GNSS disruption from ICAO, nations, air navigation service providers, manufacturers,...

What is system “resilience”?

What is system “resilience”?

Image: Shutterstock What's new: Discussion of system "resilience," especially in the context of PNT. Why it's important: We sometimes hear folks ask for a definition of "resilience." Many are genuinely seeking to define terms to help in identifying solutions. Others...

RNT Foundation Annual Meeting a Huge Success

RNT Foundation Annual Meeting a Huge Success

Image: RNT Foundation What's new: Our recent annual meeting was a huge success featuring: Comments from Department of Defense/War Assistant Secretary for Space Policy, Hon. Marc Berkowitz, Comments from Department of Transportation Acting Assistant Secretary for...

Get PNT News in Your Inbox