Thorsten Wehs

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This paper shows an initial approach of a system architecture for a wireless sensor network (WSN), addressing the maritime domain. Novel architectures, technologies and prototypes for WSNs have been in focus of researchers and economists for several years. The proposed system architecture is focused on maritime automation - the construction and maintenance(More)
Lateration based real time locating systems (RTLS) require anchor nodes with known positions to calculate the position of a mobile target. The geometry of the anchor nodes constrains the accuracy of the locating. In complex environments such as ships or factory floors, obstacles in the line of sight between target and anchors decrease the precision(More)
In dense environments, for example residential, office or industrial, the predominant type of link within a real time localization system (RTLS) is non-line-of-sight (NLOS). In some NLOS scenarios the signal-to-noise-ratio (SNR) of the first incoming Ultra Wideband (UWB) pulse content is much below 0 dB and the shape of the pulse is distorted. Accordingly(More)
In this paper, a concept of a system for wireless locating and data communication for industrial applications is proposed. The proposed system employs ultra-wide band radio for decentralized spatial localization of mobile sensor nodes and for communication. Due to the robustness UWB radio transmissions, it can be used in shop floor environments, e. g. for(More)
In dense environments, such as residential, office or industrial sites, the predominant type of link encountered by a radio based real-time localization system (RTLS) is non-lineof-sight (NLOS). Often, the mobile nodes are separated from their related anchor nodes by the building’s walls. In Impulse Radio Ultra Wideband (IR-UWB) based localization systems,(More)
One of the applications of Ultra-wideband pulses are in the area of indoor localization systems whereas the anchor nodes are placed at stationary positions on the ceiling or walls, while the mobile nodes can be located at any given location inside the building. The localization system has to estimate the location of the mobile nodes, but when the anchor(More)
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