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Low Energy GPS Positioning: A device-server approach
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, Faculty of Science & Engineering.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Lågenergipositionering med GPS (Swedish)
Abstract [en]

GPS is widely used for localization and tracking, however traditional GPS receivers consume too much energy for many applications. This thesis implements and evaluates the performance of a low energy GPS solution, including a working hardware prototype, that reduces energy consumption significantly. The prototype operates for 2 years on a coin cell battery, sampling every minute. The corresponding time for a traditional receiver is 2 days. The main difference is that a traditional receiver requires 30 seconds of data to estimate a position; this solution only requires 2 milliseconds of data, a reduction of a factor 15 000. The solution consists of a portable device, sampling the GPS signal, and server software that utilizes Doppler navigation and Coarse Time Navigation to estimate positions. The median positioning error is at most 38 meters in our tests. We expect that this solution will enable positioning for billions of devices in the near future.

Place, publisher, year, edition, pages
2015. , 109 p.
Keyword [en]
GPS, low energy consumption, positioning, localization, tracking, GNSS, coarse time navigation, CTN, Doppler navigation, acquisition, internet of things, signal processing, max2769
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:liu:diva-118788ISRN: LiTH-ISY-EX--15/4836--SEOAI: oai:DiVA.org:liu-118788DiVA: diva2:816996
Subject / course
Automatic Control
Presentation
2015-06-04, Systemet, Linköpings Universitet, Linköping, 15:15 (English)
Supervisors
Examiners
Available from: 2015-06-05 Created: 2015-06-04 Last updated: 2015-06-05Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf