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Development of a system for real time localization of a team of athletes using Ultra Wide band : design choices and considerations for mesh network localization

Gerth, Jasper (2019) Development of a system for real time localization of a team of athletes using Ultra Wide band : design choices and considerations for mesh network localization.

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Abstract:This research covers the entire development of an Ultra Wide Band (UWB) based localization system. We start with the distance estimation technique and do experiments to determine system parameters. Since the system is a mesh network, a way structuring communication is developed which includes synchronization of devices in the field. Suitability of different radios for this synchronization is examined using experiments. This results in a mesh of devices generating device to device distances which are broadcast using Bluetooth Low Energy (BLE). These distances are fed into a localization algorithm using Multidimensional Scaling (MDS) to estimate a location of devices. The result of this research is a working, real world mesh localization system using UWB Time Of Flight (TOF) measurements. We find that accuracy is mainly influenced by the number of nodes in the system and the ratio of range=fieldsize. A working mesh localization system is the result. Performance is mainly influenced by the number of nodes in the system and the ratio of range=fieldsize. The system does not achieve the required accuracy on a large field with few devices in the field due to this latter limitation. These findings are consistent with previous research where separate parts of a system were evaluated. These researches did however not study these effects when using a fully working system, but rather simulated such a system using only 2 devices and performing point to point distance measurements. This research shows the effect of several variables on a real mesh network and shows the limitations of such a network.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:50 technical science in general, 54 computer science
Programme:Embedded Systems MSc (60331)
Link to this item:http://purl.utwente.nl/essays/77988
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