Paper Info
Title
SALMA: UWB-based Single-Anchor Localization System using Multipath Assistance.
Abstract
Setting up indoor localization systems is often excessively time-consuming and labor-intensive, because of the high amount of anchors to be carefully deployed or the burdensome collection of fingerprints. In this paper, we present SALMA, a novel low-cost UWB-based indoor localization system that makes use of only one anchor and that does neither require prior calibration nor training. By using only a crude floor plan and by exploiting multipath reflections, SALMA can accurately determine the position of a mobile tag using a single anchor, hence minimizing the infrastructure costs, as well as the setup time. We implement SALMA on off-the-shelf UWB devices based on the Decawave DW1000 transceiver and show that, by making use of multiple directional antennas, SALMA can also resolve ambiguities due to overlapping multipath components. An experimental evaluation in an office environment with clear line-of-sight has shown that 90% of the position estimates obtained using SALMA exhibit less than 20 cm error, with a median below 8 cm. We further study the performance of SALMA in the presence of obstructed line-of-sight conditions, moving objects and furniture, as well as in highly dynamic environments with several people moving around, showing that the system can sustain decimeter-level accuracy with a worst-case average error below 34 cm.
Year
DOI
Venue
2018
10.1145/3274783.3274844
SenSys '18: The 16th ACM Conference on Embedded Networked Sensor Systems Shenzhen China November, 2018
Keywords
Field
DocType
Indoor localization,ultra-wideband,multipath,single-anchor
Multipath propagation,Transceiver,Computer science,Floor plan,Real-time computing,Ultra-wideband,Localization system,Directional antenna,Calibration
Conference
ISBN
Citations 
PageRank 
978-1-4503-5952-8
5
0.53
References 
Authors
30
7
Name
Order
Citations
PageRank
Bernhard Großwindhager1132.44
Michael Rath291.67
Josef Kulmer3556.52
Mustafa S. Bakr481.65
Carlo Alberto Boano554442.61
Klaus Witrisal655058.12
Kay Römer71270137.16