Acoustic Field Simulation of an Antenna Array at Scanning by the SPA Method for Modern Ultrasonic Testing Technologies

Болотина, И. О.; Kroening, H. Michael; Kvasnikov, K.G.; Sednev, D. A.; Sumtsova, Olga Vitalievna

doi:10.4028/www.scientific.net/amr.1040.959

Cited by 9 publications

(3 citation statements)

References 5 publications

(6 reference statements)

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“…Among other techniques of UT reconstruction, the DFA method has turned to be the most efficient due to the high resolution and contrast shown in results obtained [4][5][6].…”

Section: A-scan Reconstructionmentioning

confidence: 96%

New fields of application of antenna arrays

Болотина

Shtaynbreher

Bulavinov³

2015

2015 International Siberian Conference on Control and Communications (SIBCON)

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“…Among other techniques of UT reconstruction, the DFA method has turned to be the most efficient due to the high resolution and contrast shown in results obtained [4][5][6].…”

Section: A-scan Reconstructionmentioning

confidence: 96%

New fields of application of antenna arrays

Болотина

Shtaynbreher

Bulavinov³

2015

2015 International Siberian Conference on Control and Communications (SIBCON)

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“…У першому випадку потрібно щонайменше 17 ліній зв'язку, у другому -5. На практиці широко використовуються мікрофонні решітки з великим масивом випромінювачем, що потребує використання дорогого електронного обладнання, вартість якого пропорційна кількості мікрофонів [1,5,6]. У зв'язку з цим актуальним стає питання зниження кількості використовуваних мікрофонів в решітки при збереженні їх електричних характеристик, що призводить до зниження вартості відповідного електронного обладнання.…”

Section: особливості аналізу акустичних решітокunclassified

Analysis of acoustic field distribution of circular equaldistant and non-equidistant two–section electronics microphone array in free space

Тsekhmistro,

Shapovalov

2023

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The authors described the analysis of the spatial distribution of the acoustic field amplitude of circular microphone lattice. A model – a spherical wave emitter, represented each microphone. An analysis was carried out of the influence of the number of emitters and the radius of the array on the concentration of the acoustic field in the center and at an arbitrary distance. An algorithm has been compiled that makes it possible to take into account an arbitrary even and odd number of emitters located along the length of the arc, both uniformly and unevenly. The distribution of the complex power of the acoustic field of a linear array of emitters is considered under the assumption that each microphone (emitter) transmits the acoustic field in the form of a spherical wave. According to the classical principles (Lorentz lemma, the “Reciprocity” theorem), we believe that there is no shape of the radiation pattern as formed at short distances (near zone), that is, the distribution of the emitter field in the mode of receiving and transmitting an acoustic signal is identical. It is shown that at distances between the boundaries of the intermediate and far zones, local areas may appear in which a smaller number of microphones can provide the same acoustic field or even more than with a larger number. This can be achieved by using an internal arc of microphone arrangement, then it is possible to achieve an equivalent field along the axis of the array with a smaller number of microphones located equidistant along the outer radius, it is possible to achieve an equivalent field than with an increased number of them.

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“…Then, the time-shifted signals of all antenna array piezo-transducers are summed respectively for each inspected region. The acquired signal amplitude for each local region is mapped by color and displayed on a monitor [5,6].…”

Section: Real-time Signature Formationmentioning

confidence: 99%

Simulation of the Acoustic Field of Antenna Arrays

Болотина

Kvasnikov

Steinbrecher

et al. 2016

KEM

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The article considers the reconstruction of images by Synthetic Aperture Focusing Technique (SAFT). The work compares additive and multiplicative methods for processing signals from antenna array. We have proven that the multiplicative method gives better resolution. The study includes the estimation of beam trajectories for antenna arrays using analytical and numerical methods. We have shown that the analytical estimation method allows decreasing the image reconstruction time in the case of linear antenna array implementation.

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Acoustic Field Simulation of an Antenna Array at Scanning by the SPA Method for Modern Ultrasonic Testing Technologies

Cited by 9 publications

References 5 publications

New fields of application of antenna arrays

New fields of application of antenna arrays

Analysis of acoustic field distribution of circular equaldistant and non-equidistant two–section electronics microphone array in free space

Simulation of the Acoustic Field of Antenna Arrays

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