Computer
Multi View Image Surveillance and Tracking
MOTION '02 Proceedings of the Workshop on Motion and Video Computing
Evolution of mobile location-based services
Communications of the ACM - Mobile computing opportunities and challenges
Bluetooth and WAP push based location-aware mobile advertising system
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Practical robust localization over large-scale 802.11 wireless networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Pervasive and Mobile Computing
Restful web services
EnTracked: energy-efficient robust position tracking for mobile devices
Proceedings of the 7th international conference on Mobile systems, applications, and services
In-car positioning and navigation technologies: a survey
IEEE Transactions on Intelligent Transportation Systems
Energy-efficient rate-adaptive GPS-based positioning for smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Adaptive GPS duty cycling and radio ranging for energy-efficient localization
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
The Jigsaw continuous sensing engine for mobile phone applications
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
SeMiTri: a framework for semantic annotation of heterogeneous trajectories
Proceedings of the 14th International Conference on Extending Database Technology
Accurate GSM indoor localization
UbiComp'05 Proceedings of the 7th international conference on Ubiquitous Computing
Predestination: inferring destinations from partial trajectories
UbiComp'06 Proceedings of the 8th international conference on Ubiquitous Computing
Survey of Wireless Indoor Positioning Techniques and Systems
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
On the (In-)Accuracy of GPS Measures of Smartphones: A Study of Running Tracking Applications
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
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Smartphones with their GPS capabilities allow tracking in numerous scenarios at low costs. Whereas most scenarios need only coarse tracking, real-time tracking of competitors in sport events require fine-granular localization with high refresh frequencies. This work is conducted in the context of the sailing sports and tests the applicability of scenarios with fine-granularity requirements to today's available smartphones. We first describe our methodology to test smartphones for their suitability for fine-granular tracking. We execute a comparative study involving six modern smartphones running on three different mobile platforms and an additional dedicated GPS tracker. The GPS performance metrics accuracy, battery life, integrity and continuity were tested in four experimental setups, which were chosen with the intent to make the results applicable to real-world sports tracking scenarios. Our results show that with many of today's smartphones it is possible to fulfill fine-granularity requirements. But they also point out some devices' deficiency in integrity and continuity. Our results lead to guidelines relevant for GIS: tracking performance measurement, mobile platform and device selection, tracking application development and operation.