UWB-based Single-anchor Low-cost Indoor Localization System
| Autor: | Kay Römer, Josef Kulmer, Carlo Alberto Boano, Klaus Witrisal, Stefan Hinteregger, Michael Rath, Mustafa S. Bakr, Bernhard Großwindhager |
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| Rok vydání: | 2017 |
| Předmět: |
Directional antenna
Computer science 010401 analytical chemistry Real-time computing 020206 networking & telecommunications Ranging 02 engineering and technology 01 natural sciences 0104 chemical sciences Installation Robustness (computer science) Channel impulse response 0202 electrical engineering electronic engineering information engineering Localization system Transceiver Multipath propagation |
| Zdroj: | SenSys |
| DOI: | 10.1145/3131672.3136961 |
| Popis: | In this demo, we present a low-cost indoor localization system based on the off-the-shelf ultra-wideband transceiver Decawave DW1000. To obtain an accurate position information, the system makes use of a single anchor and of multipath reflections from walls, hence removing the need of installing a network of anchors or any other additional infrastructure. The procedure of determining the position of a tag can be divided in four consecutive stages. First, the location of virtual anchors is computed by mirroring the anchor position at reflective surfaces. Using two-way ranging, the distance and channel impulse response (CIR) between anchor and tag is obtained. This actual CIR is compared with expected CIRs from possible tag locations using a maximum likelihood approach to estimate the tag's position. Finally, a switchable directional antenna can be exploited to improve the robustness of the system by suppressing undesired, interfering multipath components. By following this procedure, the proposed system can achieve a decimeter accuracy and react to position updates in real-time. |
| Databáze: | OpenAIRE |
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