One of the largest movers of the world economy is the oil and gas industry. The industry
generates billions of barrels of oil to match more than half the world's energy demands …

Sonar imaging has numerous applications in the underwater domain. High-resolution sonar
images are useful in marine research, underwater construction work, offshore oil and gas …

Bottlenose dolphin (Tursiops truncatus) echolocation beams are typically characterized as
symmetrical− 3 dB beamwidths; however, the functional width of the beam during target …

Odontocete cetaceans use biosonar clicks to acoustically probe their aquatic environment
with an aptitude unmatched by man-made sonar. A cornerstone of this ability is their use of …

This paper applies dolphin whistles to covert underwater acoustic (UWA) communication
and proposes a UWA communication scheme based on M-ary bionic signal coding. At the …

Multiple-input-multiple-output (MIMO) sonar systems offer new perspectives for target
detection and area surveillance. This paper introduces a unified formulation for sonar MIMO …

Underwater imaging sonars are widely used for oceanic exploration but are bulky and
expensive for some applications. The sonar system of dolphins, which uses sound pulses …

To date most sonars use narrow band pulses and often only the echo envelope is used for
object detection and classification. This paper considers the advantages afforded by bio …

Dual-frequency (DF) transmit waveforms comprise signals at two different frequencies. With
a DF transmit waveform operating at both fundamental frequency (f 0) and second-harmonic …

The covertness of an active sonar is a very important issue and the sonar signal waveform
design problem is studied to improve covertness of the system. Many marine mammals …