In the scenario of ambient noise, the noise powers received by the pressure and velocity
components in an underwater acoustic vector sensor (AVS) array are unequal. This paper …

High-precision time-frequency (TF) analysis (TFA) based on the synchrosqueezing wavelet
transform can improve the TF resolution and sharpen TF representations (TFRs). However …

A coprime array with fewer sensors can achieve the same resolution as a uniform linear
array. However, when detecting co-frequency targets, there can be prominent false alarms …

The active detection of underwater targets is an important area of research and has
numerous applications. In this paper, a bistatic detection and positioning system using an …

Direction-of-arrival (DOA) estimators are typically derived assuming uniform white noise,
which is characterized by a scaled identity covariance matrix. However, in practice, the noise …

This paper describes the lessons learned from the experiment BIOCOM'19 carried out in
January 2019, in a shallow water bay off the island of Cabo Frio (RJ, Brazil). A dual …

Acoustic vector sensors (VS) for underwater applications have been widely investigated in
the last three decades. In the 90s, VS studies were mostly directed to sonar applications …

In this paper, an alternating iterative weighted least squares method is proposed to handle
the off-grid issue in sparsity-based direction of arrival (DOA) estimation for acoustic vector …

This paper shows the performance resulting from combining vector sensor directional
components in an underwater acoustic communication experiment. The objective is to relate …

For the problem of direction-of-arrival (DOA) estimation using a coprime array, there are high
spatial spectrum outputs of false alarms caused by the overlap of main and grating lobes …