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P2P Ranging-Based Cooperative Localization Method for a Cluster of Mobile Nodes Containing IR-UWB PHY
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- Authors
- Seong Yun Cho, Joo Young Kim, Munkhzul Enkhtur
- Issue Date
- 2013-12
- Citation
- ETRI Journal, v.35, no.6, pp.1084-1093
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Project Code
- 11DC1100, UWB 기반 휴대용 피아식별/병사통신 시스템 개발, Cho Seong Yun
- Abstract
- The problem of pedestrian localization using mobile nodes containing impulse radio ultra wideband (IR-UWB) is considered. IEEE 802.15.4a-based IR-UWB can achieve accurate ranging. However, the coverage is as short as 30 m, owing to the restricted transmit power. This factor may cause a poor geometric relationship among the mobile nodes and anchor nodes in certain environments. To localize a group of pedestrians accurately, an enhanced cooperative localization method is proposed. We describe a sequential algorithm and define problems that may occur in the implementation of the algorithm. To solve these problems, a batch algorithm is proposed. The batch algorithm can be carried out after performing the sequential algorithm to linearize the nonlinear range equation. When a sequential algorithm cannot be performed due to a poor geometric relationship among nodes, a batch algorithm can be carried out directly. Herein, Monte Carlo simulations are presented to illustrate the proposed method and verify its performance. © 2013 ETRI.
- KSP Keywords
- Cooperative Localization, IEEE 802.15.4a, Impulse Radio Ultra-Wideband(IR-UWB), Impulse radio(IR), Localization method, Mobile node(MN), Monte-Carlo simulation(MCS), Pedestrian localization, Range equation, Sequential algorithm, Transmit power