Poster Abstract: Improved Reverse Localization Schemes for Underwater Wireless Sensor Networks

Localization of sensor nodes is important for wireless sensor networks (WSNs) especially for underwater WSNs (UWSNs). Among the existing UWSN localization approaches, reverse localization scheme (RLS) is an event-driven method suitable for underwater surveillance. RLS adopts the strongest arrival or the first arrival as the direct path, which is however not accurate enough due to the severe multipath effect in underwater acoustic channels. We propose median RLS (MRLS) to select the median path and weighted RLS (WRLS) by assigning each path with a possibility to be the direct path for UWSNs. Numerical results have validated the proposed schemes and further suggested that WRLS outperforms MRLS and traditional approaches and is capable to diminish the multipath effect.