Distributed RSS-AoA Based Localization with Unknown Transmit Powers

• Autor(a) principal: Dinis, Rui
• Data de Publicação: 2016
• Outros Autores: Tomic, Slavisa, Beko, Marko
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/11144/3679
• topic: Wireless localization; Distributed localization; Received signal strength (RSS); Angle-of-arrival (AoA); Second-order cone programming (SOCP); Wireless sensor network (WSN)

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