WPNC 2015

Classification of Ultra-Wideband (UWB) Pulses Distorted by Penetration Effects

Autoren: Thorsten Wehs, Allan C. Maheri, Carsten Koch, Tilman Leune

In: accepted at The 12th Workshop on Positioning, Navigation and Communication 2015 (WPNC'15) in Dresden, Germany, March 11-12, 2015

Abstract: 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 nodes
and the mobile nodes are separated by a solid material, such
as a wall, wood, partition and glass, the performance of a
localization system deteriorate due to distortion of UWB pulses
as it penetrates the material. The quality of distortion is mainly
affected by the type of material, thickness and the pulses’ angle
of incidence. In this paper, we analyse features which strongly
characterizes the distorted pulses and with help of machine
learning techniques, we present a framework for estimating the
material type, material thickness and pulse’s angle of incidence
from a received distorted pulse. First, the material which distort
the UWB pulse is classified, second the material thickness is
assigned to four given classes of thickness and finally the pulse’s
angle of incidence is estimated.

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