quo vadis gnss?
TRANSCRIPT
pixelcreatures/CC0 1
©Google 2
SomeDriftwood/CC BY 3.0 3
Quo Vadis GNSS?
Dr. Lukasz Bonenberg10th December 20162016 Christmas Lecture
4
The road ahead
1 Guiding light
2 The magician
3 The sage
4 Threats and Challenges
5 More phones than people
6 Summary
5
Standing on the shoulders of giants
• Prof. Terry Moore• Dr. Richard Bingley• Prof Gethin Roberts• Dr. Xiaolin Meng• Dr. Simon Roberts• Steve Fuller• ...
6
Guiding light
Position everywhere
dima goroziya/CC0 8
GPS
Figure courtesy of Prof T Moore 9
Psueudorange
Pseudorange = Travel Time * Speed of lightFigure courtesy of Prof T Moore 10
GPS Navigation Concept
Figure courtesy of Prof T Moore 11
Figure courtesy of Prof T Moore 12
Carrier phase
Figure courtesy of Prof T Moore 13
CORS networks
14
Civil Engineering
Figure courtesy of Prof Gethin Roberts and Dr Xiaolin Meng 15
The magician
Let’s consider time
Figure courtesy of Prof T Moore 17
Light travel in one second...
186 000 miles300 000 km
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Your own nanosecond
29.98 cm
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SplitShire/BY0 20
GNSS -Four is better than one
©2010 The Kellogg Report 21
The sage
GNSS for positioning
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Global network
Figure courtesy of Dr R Bingley 24
Tectonic plates
Figure courtesy of Dr R Bingley 25
Sea level monitoring
Stevebidmead/CC0 26
Weather prediction
Figure courtesy of Dr R Bingley 27
Threats and Challenges
Space Weather
29
Ageing constellation
Figure courtesy of Prof T Moore 30
Multipath
Unsplash/CC0 31
Interference and jamming
32
Hazardously Misleading Information
33
Time dependent reference frames
Figure courtesy of Dr R Bingley 34
More phones than people
William Starkey/CC0 36
Interconnected
©Eric Fischer/bigthink.com 37
Urban Canyons
Pexels/CC0 38
Intelligent transport
Unsplash/CC0 39
GNSS miniaturisation
Simon Taylor/CC BY-SA 2.5 40
©NAVTEQ 41
dm everywhere?
Figure courtesy of Prof T Moore 42
Multi-frequency chipsets
©Subirana et al, 2011 43
Open Standards and APIs
Figure courtesy of Prof T Moore/ ©Google 44
Privacy concerns
©Ed Parsons 45
Summary
What we covered today
1 Guiding light
2 The magician
3 The sage
4 Threats and Challenges
5 More phones than people
6 Summary
47
Take away
• GPS (GNSS) provide position everywhere• You carry equivalent of atomic clock in your pocket• GNSS - 4 is better than one• We are still to see technology full potential• Everything takes time. Cooperation and communication make
things easier.
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Useful links
• Nottingham Geospatial Institute -http://www.nottingham.ac.uk/ngi/
• GSA market report -https://www.gsa.europa.eu/market/market-report
• 17 Nov take off - http://bit.ly/GAL_2016
• RAE GNSS Vulnerability - http://bit.ly/RAE_GNSS
• RAE Space Weather - http://bit.ly/RAE_weather
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