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The histogram algorithm based on sound intensity having been widely used to estimate the azimuths of underwater acoustic targets. The advantage of this algorithm is that all we need is a single vector hydrophone to distinguish multiple targets' azimuths. The histogram approach acquiesces in that the acoustic pressure is perfectly correlated with the particle velocity. However, the sound field excited...
In this paper, an improved joint processing algorithm based on Estimation of Signal Parameters via Rotational Invariance Technique(ESPRIT), which can efficiently combine acoustic pressure and analytic velocity, is proposed to estimate azimuth angle. This method can be applied in acoustic vector sensor array (AVSA) of any formation. A novel cross-covariance matrix of acoustic pressure and analytic...
The vector hydrophone can collect the acoustic pressure and the particle velocity information of the same point in the sound field synchronously and independently. It has four channels, which output the acoustic pressure and the projection components of the particle velocity vector along the x, y and z axes in the Cartesian coordinate system of the observed point respectively. The acoustic pressure...
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