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Implementation and evaluation of Space Time Alarm Clock
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Geoinformatics.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Implementering och utvärdering av rum-tids väckarklocka (Swedish)
Abstract [en]

Many modern mobile communication devices are equipped with a GPS receiver and anavigation tool. These devices are useful when a user seeks to reach a specified destinationas soon as possible, but may not be so when he/she only needs to arrive at thedestination in time and wants to focus on some activities on the way. To deal with thislatter situation, a method and device called “Space Time Alarm Clock” is presented forhelping the user reach the destination by a specified deadline and inform the user aboutthe consequences of his/her decisions. It does so by continuously and efficiently computinghow much more time the user may stay at his/her current location without failing toreach the destination by the deadline. Furthermore, it determines the possible movementchoices that a user can make with regards to an underlying road network, it computesthe shortest travel time associated with each choice and informs the user about the consequencesof his/her decisions. Advantage of this approach is that it works completelyin the background so that the user‘s en-route activities will never be interfered with. The“Space Time Alarm Clock” was implemented for Stockholm, where it was tested.

Place, publisher, year, edition, pages
2014. , 60 p.
Keyword [en]
shortest path tree, location based services, shortest travel time, map matching, labeling systems, alarm scheduling
National Category
Geosciences, Multidisciplinary
URN: urn:nbn:se:kth:diva-157533OAI: diva2:770559
Subject / course
Educational program
Master of Science - Transport and Geoinformation Technology
2014-06-24, 3074, Drottning Kristinas väg 30, Stockholm, 13:30 (English)
Available from: 2014-12-10 Created: 2014-12-10 Last updated: 2014-12-10Bibliographically approved

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STAC Implementation and Evaluation(5941 kB)80 downloads
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Geodesy and Geoinformatics
Geosciences, Multidisciplinary

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