期刊
IEEE WIRELESS COMMUNICATIONS LETTERS
卷 5, 期 4, 页码 392-395出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2016.2567394
关键词
Wireless localization; distributed localization; received signal strength (RSS); angle-of-arrival (AoA); second-order cone programming (SOCP); wireless sensor network (WSN)
资金
- Fundacao para a Ciencia e a Tecnologia [UID/EEA/00066/2013, UID/EEA/50008/2013-VELOCE-MTC, PTDC/EEITEL/6308/2014-HAMLeT, SFRH/BPD/108232/2015, SFRH/BD/91126/2012]
This letter addresses the hybrid range/angle-based target localization problem in a cooperative 3-D wireless sensor network where no central processor is available. Due to battery exhaust over time, sensors' transmit powers are assumed different and unknown. Range and angle measurements are drawn from the received signal strength and angle-of-arrival models, respectively. By exploiting the measurement models, we derive a novel local-estimator by which each target updates its own estimate, based on the least squares criterion. Second-order cone relaxation technique is then applied to approximately solve the attained problem due to its non-convex nature. Our simulation results show that the proposed algorithm efficiently solves the localization problem.
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