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Prof. Charles Curry BEng, CEng, FIET Chronos Technology Ltd
Latest Research on GPS Jamming
“Gone in 20 Seconds”
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Presentation Contents
Background Research
Who or What is Jamming?
Where to buy your jammers
Jammer Testing
Research with Police
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UK Research since 2008
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Who or What is Jamming?
Personal Privacy Devices
Serious Crime
Terrorism
Nation State
Radio Frequency Interference
Re-radiating Antennas
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“White Van Man”
Events By Day Indicates Working Week Use
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Unauthorised Truck Journeys
Truck driver uses Jammer so
he can sleep at home not at
the Highway Truck-Stop
Cell Site off-air for 8 hours!!
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Jamming Fleet Tracking Technology
Three
Switch
GPS based
fleet tracking
technology
used here
Resilient Timing
System using
Rb/OCXO holdover
not impacted by
jamming
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GPS Jamming Assisted Crime
Top end vehicles & plant
– Doors open in 10 seconds
– Jammer on back seat
– Gone in 20 seconds!
– Break up or export
Photos courtesy of AVCIS
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Rogue Antennas
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Heavy RFI Environment
Roof in London
Loan of GAJT-700ML courtesy Novatel, Inc. Photo: Canadian Army
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Where to buy Jammers
Over 50 active Chinese Web Sites
Power ~ 100mW to 50W!
3W 500mW
250mW
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Geolocation Testing
Exelis Signal Sentry® 1000
– Uses Chronos Sensors
Mesh – Open Space & Urban
Wireless Links
Sensors in weatherproof
enclosures
Photos: With the permission of the Commandant, Sennybridge Training Area
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Mesh Tests – Open Space - Static
Way Points Set up South of Car Park Static Testing at Waypoints
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Mesh Tests – Open Space - Car
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Mesh Tests – Urban - Bicycle
Photos: With the permission of the Commandant, Sennybridge Training Area
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Mesh Tests – Urban - Car
Photos: With the permission of the Commandant, Sennybridge Training Area
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Drive Through
Photos: With the permission of the Commandant, Sennybridge Training Area
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Sennybridge Testing
Photos: With the permission of the Commandant, Sennybridge Training Area
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-10 -8 -6 -4 -2 0 2 4 6 8 10-40
-20
0
20
40
Time [s] (negative approaching)
Pow
er
[dB
m],
Pow
er
diffe
rence [
dB
]
Estimated jammer speed: 38 mph, detector angle: 15.00 deg ccw
AJR Sennybridge: 7/8/14 14:07 BST
T0-0.33s T0 T0+0.33s
AJR – Automatic Jamming Recognition
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Project AJR – Just Starting Automatic Jamming Recognition
Colocation of GPS Jamming
Detection with ANPR
Photos: With the permission of the Commandant, Sennybridge Training Area
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Research with Hampshire Police
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Trial Deployment - Southampton
Exelis Signal Sentry
1000 Mesh Jammer
Geolocation Network
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Scene of Crime Photos
Photo courtesy of Hampshire Police Photo courtesy of AVCIS
Cigarette Lighter
style Jammer hot
wired to car battery
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Car Crime Videos
http://www.bbc.co.uk/programmes/p014f7jk
https://www.youtube.com/watch?v=I8fe3nNUmBg
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Kills @ Feb 2015!
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Jamming Detection App from MITRE
Android app for detecting
GPS jamming and
spoofing attacks
No additional / external
hardware
Runs on all modern
versions of Android
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Conclusion
Research is on-going
– Detection, Mitigation, Resilience
Do you have the Resilience?
– Jammer Assisted Crime “JAC”?
– RFI from harmonics
– Reradiating GPS Antennas
Download the SENTINEL Report
– Here
Linked in Discussion – GNSS Vulnerabilities
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www.chronos.co.uk
www.gpsworld.biz
Thankyou