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Título

Radiating Wideband Sonar Pulses with Resonant Sandwich Transducers by Designing the Driving Voltage Waveform

AutorCobo, Pedro; Ranz Guerra, Carlos ; Siguero Guerra, Manuel
Palabras clavePulse radiation
Sandwich Transducers
Piezoelectric Transducers
Driving Voltage Waveform
Resolving Power
Fecha de publicaciónsep-2001
EditorAcoustical Society of Italy
Citación17th International Congress on Acoustics, Underwater Acoustics, Ocean Acoustic Tomography, 6C.06.01
ResumenA technique to radiate short length, high resolution, pulses with conventional piezoelectric transducers is described. It consists on designing the driving voltage waveform so that the radiated pulse has a zero-phase cosine-magnitude spectrum compatible with the natural frequency response of the transducer. According to Berkhout [1], zero-phase cosine-magnitude pulses have the minimum length, maximum resolution, within a prescribed frequency band. When applied to a 9 kHz sandwich transducer, this technique decreases the pulse length from 1 ms to 0.13 ms, increases the bandwidth from 1.4 kHz to 11.25 kHz, and lowers the Q factor from 6.2 to 1.23, at the cost of 33% of amplitude loss.
DescripciónCommunication presented at the 17th International Congress on Acoustics, Rome, 2-7 September 2001.
URIhttp://hdl.handle.net/10261/5626
ISBN88-88387-01-3
Aparece en las colecciones: (IFA) Comunicaciones congresos
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