Tonal detection represents a significant task to detect and classify target sources for passive
sonar in marine environments. However, in low signal-to-noise ratio (SNR) situations, tonals …

Noncooperative maneuvering target motion analysis is one of the challenging tasks in the
field of underwater target localization and tracking for passive sonar. Underwater …

The performance of widely linear beamformer (WLB) is seriously degraded by any
uncalibrated mutual coupling between antenna elements. In this paper, we propose an …

The complex and changeable marine environment will cause the signal detected by
underwater acoustic sensors to be extremely weak, and traditional signal processing …

Both surface ships and submarines are vital sea transportation platforms using underwater
propellers as propulsion devices. The propeller signal is the primary source of the radiated …

Detection of acoustic tonals from surfaces and underwater vehicles is important for passive
sonar systems. Enhancements of the tonals are usually necessary in passive sonar prior to …

Multitarget tracking is an important task for autonomous underwater vehicles (AUVs). Due to
the limited space on AUVs, the aperture of the sonar array mounted on an AUV is small. The …

Remote passive sonar detection with low-frequency band spectral lines has attracted much
attention, while complex low-frequency non-Gaussian impulsive noisy environments would …

Spectral line enhancement and transient interference suppression of underwater objects are
critical issues for passive sonar systems. Conventional approaches for processing spectral …

In order to detect weak underwater tonals, adaptive line enhancers (ALEs) have been widely
applied in passive sonars. Unfortunately, conventional ALEs cannot perform well amid …