Design, development and testing of transducers for creating spiral waves for underwater navigation

Brown, David A.; Bachand, Corey; Aronov, Boris

doi:10.1121/1.4800393

Cited by 7 publications

(6 citation statements)

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“…Also in 2012, a different Phased-Spiral source using a radially polarized piezoceramic hollow cylinder, divided in four selective excitation zones, that forms two dipoles with phase biased in quadrature [11]. Later, a reference source was included in the same package (BTech BT-SW1..6) [12], and was employed in the work of the spiral wavefront sonar [13] and in the work of the UUV spiral wavefront navigation [6]. In 2018, Lu et al developed a Phased-Spiral source using 8 longitudinal vibrating elements that vibrate due to multiple piezoelectric ceramic hollow cylinders [14].…”

Section: Preprintsmentioning

confidence: 99%

“…In this prototype the circular wavefront is generated by driven the four monopoles with the same signal, in contrast to what is described in [12] which uses a separate reference source. The spiral wave front is generated by applying the same signal with a 90 • phase shift for each adjacent quadrant: 0 • , 90 • , 180 • , and 270 • for the quadrants A, B, C, and D, respectively.…”

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In Lab Demonstration of an Underwater Acoustic Spiral Source

Viegas¹,

Zabel²,

Silva³

2023

Preprint

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Underwater acoustic spiral sources are able to generate spiral acoustic fields where the phase depends on the bearing angle. It allows to estimate the bearing angle relatively to a receiver by subtracting the phases of a spiral and a circular wavefront, and finds application in the bearing angle estimate with a single hydrophone, e.g., for unmanned underwater vehicles localization. This paper presents a new prototype for a spiral acoustic source, which is able to generate the required wavefronts, and is composed of four monopoles in the same piezoceramic cylinder. This paper reports the prototyping and the acoustic tests performed in a water tank where the spiral source was characterized in terms o Transmitting Voltage Response, phase, and horizontal and vertical directivity patterns. A receiving calibration method for the spiral source is proposed and shows a maximum angle error of 1 degree when the calibration and the operation are carried under the same conditions and a mean angle error up to 6 degrees for frequencies above 25 kHz when the same conditions are not fulfilled.

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Section: Preprintsmentioning

confidence: 99%

mentioning

confidence: 99%

In Lab Demonstration of an Underwater Acoustic Spiral Source

Viegas¹,

Zabel²,

Silva³

2023

Preprint

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show abstract

“…In 2012 also, a different Phased-Spiral source using a radially polarized piezoceramic hollow cylinder, divided into four selective excitation zones, which formed two dipoles with the phase biased in quadrature, was presented [ 23 ]. Later, a reference source was included in the same package (BTech BT-SW1..6) [ 24 ] and was employed in the work of the spiral wavefront sonar [ 25 ] and in the work of the UUV spiral wavefront navigation [ 18 ]. In 2018, Lu et al developed a Phased-Spiral source using eight longitudinal vibrating elements, which vibrated due to multiple piezoelectric ceramic hollow cylinders [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

In-Lab Demonstration of an Underwater Acoustic Spiral Source

Viegas

Zabel

Silva

2023

Sensors

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Underwater acoustic spiral sources can generate spiral acoustic fields where the phase depends on the bearing angle. This allows estimating the bearing angle of a single hydrophone relative to a single source and implementing localization equipment, e.g., for target detection or unmanned underwater vehicle navigation, without requiring an array of hydrophones and/or projectors. A spiral acoustic source prototype made out of a single standard piezoceramic cylinder, which is able to generate both spiral and circular fields, is presented. This paper reports the prototyping process and the multi-frequency acoustic tests performed in a water tank where the spiral source was characterized in terms of the transmitting voltage response, phase, and horizontal and vertical directivity patterns. A receiving calibration method for the spiral source is proposed and showed a maximum angle error of 3° when the calibration and the operation were carried out in the same conditions and a mean angle error of up to 6° for frequencies above 25 kHz when the same conditions were not fulfilled.

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“…This transducer uses 1–3 piezocomposite material formed around a spiral-shaped backing to emit the spiral wave. The second method includes, the “Phase Spiral” transducer, also proposed by Dzikowicz and Hefner [4,5], the Cylindrical Transducer with divided electrodes proposed by Brown [6,7,8], and the Spiral Sound Transducer Based on Longitudinal Vibration Structure proposed by Wei Lu [9]. The “Phased Spiral” transducer also uses 1–3 piezocomposite material and backing, but the electrode is divided into 16 elements.…”

Section: Introductionmentioning

confidence: 99%

Underwater Spiral Wave Sound Source Based on Phased Array with Three Transducers

Lü

Guo

Lan

et al. 2019

Sensors

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This paper realizes an underwater spiral wave sound source by using three omni-directional spherical transducers with three different phases. The pressure distribution of the sound field for a phased array is derived using the superposition theory of sound field. The generation of spiral wave field is presented, the relationship between the performance of phased array sound field and the array parameters is analyzed, and also verified by the finite element method (FEM). A spiral wave sound source with three spherical piezoelectric ceramic transducers is then designed and fabricated based on FEM simulation, and the performance of the sound source is analyzed. Measurements are made in a reverberation pool, and the result shows that the fabricated spiral wave sound source is capable of producing a spiral sound wave. Under a frequency of 3.5 kHz, the phase directivity has a fluctuation of ±21°, and the amplitude directivity range is 4.3 dB, which verifies the realization of the spiral wave sound source.

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Design, development and testing of transducers for creating spiral waves for underwater navigation

Cited by 7 publications

References 0 publications

In Lab Demonstration of an Underwater Acoustic Spiral Source

In Lab Demonstration of an Underwater Acoustic Spiral Source

In-Lab Demonstration of an Underwater Acoustic Spiral Source

Underwater Spiral Wave Sound Source Based on Phased Array with Three Transducers

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