The piezoelectric hydroacoustic transducer is an underwater detection device that can work as both a driver and a sensor. Accurate prediction of its acoustic characteristics in a noisy underwater environment is very important for the design of a robust and durable transducer. The finite element meth

Abstract: Aiming at the structural pressure problem of deep-water vector hydrophones, the maximum stress formula of the external pressure spherical shell is derived, and the influence of the materials and dimensions of the co-vibrating spherical vector hydrophone on its acoustic performance and pres

The shape of the hydrophone is a standard spherical shape. The spherical shell of the hydrophone is composed of upper and lower hemispheres. The outer radius of the two hemispheres is 36 mm, the wall thickness of the lower hemisphere is 3 mm, and the wall thickness of the upper hemisphere is 4 mm. A

With the development of ocean research, there is a wide range of demand for transducers that can work in deep water. Deep-water transducers are mostly mounted on various types of self-contained underwater platforms, theplatform can accommodate limited volume and weight as well as power supply capaci

introduction The ocean is not only an important treasure of fishery and mineral resources, but also an important position for countries to maintain national security and military struggles. Therefore, underwater acoustic technology has become an important means for the current exploration and develo

Acoustic waves are the only carrier that humans have that can transmit information and energy over long distances in the vast ocean. On the land, people use electromagnetic waves to develop radars. Similarly, people use acoustic waves as information carriers to develop underwater targets for detecti

1　The basic concept and history of underwater acoustic transducer network The underwater acoustic transducer network is the product of the popularization of global network technology. Now that the land is connected through wired optical or electrical means, and the network is connected through wirel

In order to receive low frequency sound waves with high sensitivity, a double sided three-lamination flexural hydrophone was studied, applying the finite element software COMSOL to the simulation and optimization design of the curved hydrophone. The influence of every part on the receiving sensitivi

A sound source level estimation method based on the acoustic inverse frequency response function (IFRF) is proposed to solve the problem of poor accuracy of the assessment of the vibration and noise level of underwater acoustic equipment in shallow waters. This method represents the multi-channel tr

Analysis of target detection performance for a single vector hydrophone windowed histogram algorithm

Single-directional circular hydrophone sensor

The histogram algorithm of a single vector hydrophone has good robustness and target azimuth estimation performance. This article analyzes and summarizes the target detection performance of the histogram algorithm, and proposes an autonomous detection of underwater targets based on target azimuth es

It is bjective to study the changes in the shape and geometrical position of the acoustic focal range of the concave spherical ultrasonic transducer when the sound intensity is high and the medium has a large attenuation. From the perspective of physical acoustics, the effects of nonlinearity and me

IntroductionIn ocean exploration, through the analysis and processing of the signal received by the hydrophone, the target category of the sound source and its related angle, position and other state parameters can be obtained. However, different noises and interferences will inevitably be mixed int