Centre of Technology and Systems

Publications

Hybrid RSS-AoA technique for 3-D node localization in wireless sensor networks

Publication . Tomic, Slavisa; Marikj, Milica; Beko, Marko; Dinis, Rui; Orfao, Nuno

We consider 3-D target positioning in noncooperative wireless sensor network (WSN) by employing received signal strength (RSS) and angle-of-arrival (AoA) measurements. Based on the least squares (LS) criterion, we derive a novel objective function for solving the hybrid localization problem. Despite the fact that the resulting optimization problem is non-convex, we show that it can be approximated into a convex problem by applying second-order cone programming (SOCP) relaxation. Moreover, we show that the objective function can be written in the form that belongs to the generalized trust region subproblems (GTRS), which can be solved exactly. Our numerical results exhibit remarkable performance of the new approaches, reducing the estimation error for more than 5 m and 3 m, in comparison to the state-of-the-art approach.

2015-10Conference paper

Restricted access

Keywords

Micro and nanoelectronics and Signal Processing,Industrial Systems and Energy,Intelligent Control and Decision-based Systems,Collaborative Networks and Interoperability, Engineering and technology

Funding agency

Fundação para a Ciência e a Tecnologia, I.P.
Fundação para a Ciência e a Tecnologia, I.P.

Funding programme

6817 - DCRRNI ID
Financiamento do Plano Estratégico de Unidades de I&D - 2013/2015 - OE

Funding Award Number

UID/EEA/00066/2013