Low probability of detection (LPD) is an extremely important characteristic of an underwater
acoustic communication (UWAC) system when used for military-related applications, since …

With the growing use of underwater acoustic communications (UWAC) for both industrial
and military operations, there is a need to ensure communication security. A particular …

Underwater acoustic communications are becoming a popular solution for underwater data
communications and telemetry, making the authentication of transmitted data a necessity. In …

For classification of underwater acoustic signals, we propose a novel sparse anisotropic
chirplet transform (ACT) to reveal fine time-frequency structures. The signal features in the …

Most existing wideband signal detection and recognition (WSDR) methods rely on diverse,
large-scale, and well-labeled training data, which are often difficult to obtain in practical …

We consider the challenge of tracking and estimating the size of a single submerged target
in a high reverberant underwater environment using a single active acoustic transceiver …

Wireless transmissions in water are mostly carried out via long-range (but low-rate)
underwater acoustic communications, or short-range (but high-rate) underwater optical …

We consider the problem of discriminating a legitimate transmitter from an impersonating
attacker in an underwater acoustic network under a physical layer security framework. In …

As underwater acoustic communication technologies become mature and underwater
networks evolve into reliable solutions for data communications, authenticating transmitted …

This article considers the detection and localization of an underwater target by a sensor
network consisting of an active acoustic source, multiple distributed passive sensors, and a …