© David Last Resilient Positioning, Navigation & Timing Forum 14 April 2014 Rotterdam The Navigation of Navigation Professor David Last Past-President.

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Presentation transcript:

© David Last Resilient Positioning, Navigation & Timing Forum 14 April 2014 Rotterdam The Navigation of Navigation Professor David Last Past-President Royal Institute of Navigation Picture: earthobservatory.nasa. gov//ewsroom/BlueMarble/

© David Last A Proper Navigator Photo: Dreamstime.com

Photo: Ashtech Inc., Optron Pty.

GPS and other satellite navigation services … have applications so pervasive that there is now a real threat to global security if the systems should fail. GNSS signals are used internationally by almost every industry: rail, road, aviation, space, maritime, agriculture, energy, surveying, construction, law enforcement and communications. Dependence on GNSS connects many independent services into an ‘accidental system’ with a single point of failure: the satellite PNT signal. A satellite signal is a weak foundation for important services … and can fail in dozens of ways. Source: (Dr Martyn Thomas)

andIRNSS (India) GPS plus … QZSS (Japan) GALILEO (Europe) IRNSS (India) GLONASS (Russia) Compass-Beidou (China) … and all the augmentations:

© David Last Satellite and Control System Failures Official announcement: "A significant GPS anomaly occurred on 1 Jan (which) … resulted in the transmission of Hazardously Misleading Information." Sources: Vogel, Macabiau & Suard, ‘Effect of a GPS Anomaly on Different GNSS Receivers’, ION GNSS 2005, Long Beach, CA, Sep 13-16, 2005, Hoppe & Walterfang, ‘Investigation of a GPS Satellite Problem with respect to DGPS and GPS users’, European Journal of Navigation, May 2004, SVN23 clock failure

© David Last Solar flares “The burst produced 20,000 times more radio emission than the … rest of the sun … and swamped GPS receivers over the entire sunlit side of the Earth.”

© David Last Picture:

A small jammer on this cliff-top disrupted GPS on vessels out to ranges as wide as the Dover Strait

© David Last Low-powered GPS jammer on ship Jammer of less than 1 milliWatt: False positions, and velocities Autopilot may turn vessel But no alarms! With a little more jammer power: Electronic Chart Displays Autopilot Automatic Identification System Differential GPS Satellite voice and data comms Maritime distress safety system plus … Ship’s Radar & Gyrocompass

© David Last

“From the results some important conclusions were reached. The jamming threshold for GPS and Galileo are comparable”.

From: Carroll, J.V., ‘Vulnerability assessment of the transportation infrastructure relying on GPS’, 30 th Annual Convention & Technical Symposium of the International Loran Association, Paris, 10 October 2001

From: Carroll, J.V., ‘Vulnerability assessment of the transportation infrastructure relying on GPS’, 30 th Annual Convention & Technical Symposium of the International Loran Association, Paris, 10 October 2001

GPS chaos: How a $30 box can jam your life 21:00 06 March 2011 by David HamblingDavid Hambling

Pictures: wikipedia.org, dailymail.co.uk, insidegnss.com, youtube.com

From:

London Heathrow Runway 27L GNSS Instrument Approach Supporting cast: ILS/DME (I-LL) LOC/DME (I-LL) MLS/DME Starring … Instrument Landing System Localiser Instrument Landing System Glideslope Distance Measuring Equipment Microwave Landing System Barometric altimeter High-Intensity Lighting System From: 23AE573F59E3C0B9AB33BC5B126A385E/7FE5QZZF3FXUS/EN/Charts/AD/AIRAC/EG_AD_2_EGLL_8-12_en_ pdf

© David Last

Picture:

© David Last Resilient Positioning, Navigation & Timing Forum 14 April 2014 Rotterdam The Navigation of Navigation Professor David Last Past-President Royal Institute of Navigation Picture: earthobservatory.nasa. gov//ewsroom/BlueMarble/