GPS-Free Localization Schemes for Underwater Wireless Sensor Networks

Compared to other localization algorithms, the SemiDefinite Programming (SDP) approach has proved to deliver accurate results even in noisy backgrounds. In this paper, we propose a novel design for underwater localization systems using SemiDefinite Programming. The objective is to provide marine scientists with a cost-effective efficient way in conducting relevant research. Two designs, fixed-position and magnified-range, are proposed. Both schemes have shown a high accuracy and an outstanding performance according to simulation results. Future research directions are discussed at the end of this paper.