STVF: Spatial-Temporal Variational Filtering for Localization in Underwater Acoustic Sensor Networks
Localization is one of the critical services in Underwater Acoustic Sensor Networks (UASNs).Due to harsh underwater environments, the nodes often move with currents continuously.Consequently, the acoustic signals usually propagate with varying speeds in non-straight lines and the noise levels change frequently with the motion of the nodes.These lim