Underwater Acoustic Target Tracking: A Review

Underwater Acoustic Target Tracking: A Review

Advances in acoustic technology and instrumentation now make it possible to explore marine resources. As a significant component of ocean exploration, underwater acoustic target tracking has aroused wide attention both in military and civil fields. Due to the complexity of the marine environment, numerous techniques have been proposed to obtain better tracking performance. In this paper, we sur...

Underwater Target Positioning with a Single Acoustic Sensor

The availability of reliable underwater positioning systems to localize one or more vehicles simultaneously based on information received on-board a support ship or an autonomous surface vessel is key to the operation of some classes of AUVs. Furthermore, there is considerable interest in reducing the number of sensors involved in acoustic navigation/positioning systems to reduce the costs invo...

Evaluation of underwater acoustic propagation model (Ray theory) in a river using Fluvial Acoustic Tomography System

Underwater acoustics is widely used in many applications, such as oceanography, marine biology, hydrography, fishery, etc. Different models are introduced to simulate the underwater acoustic propagation in the oceans and the seas. In this study, the Ray Theory model is used to simulate the acoustic wave propagation in a shallow-freshwater river (Gono River) located in western part of Japan. The...

Tracking of Rapidly Time-Varying Sparse Underwater Acoustic Communication Channels

Sub-space Channel Tracking for Correlated Underwater Acoustic Communication Channels

Many underwater acoustic channels exhibit correlated (semideterministic) multipath arrivals. Such channels are often timevarying with extensive multipath delay and yet have a limited number of degrees of freedom due to inter-path correlation. Traditional channel estimation algorithms do not exploit this correlation structure. To exploit cross-tap correlation, the channel impulse response is pro...