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 …

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

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 …

Passive sonar is widely used for target detection, identification and classification based on
the target radiated acoustic signal. Under the influence of Doppler, generated by relative …

Remote passive sonar detection and classification are challenging problems that require the
user to extract signatures under low signal-to-noise (SNR) ratio conditions. Adaptive line …

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

Marine ambient noise can negatively affect underwater acoustic target (UWAT) recognition.
Previous related studies have focused on the suppression of high-frequency noise …

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 …

Adaptive line enhancer (ALE) is one of the vital signal processing techniques to the
detection and recognition of underwater acoustic targets for passive sonars. Conventional …

The low frequency line spectrum noise radiated by ships has strong stability and is difficult to
eliminate, which is the key information required for passive signal detection. A vector …