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Título : Radiating Wideband Sonar Pulses with Resonant Sandwich Transducers by Designing the Driving Voltage Waveform
Autor : Cobo, Pedro, Ranz Guerra, Carlos, Siguero Guerra, Manuel
Palabras clave : Pulse radiation
Sandwich Transducers
Piezoelectric Transducers
Driving Voltage Waveform
Resolving Power
Fecha de publicación : Sep-2001
Editor: Acoustical Society of Italy
Resumen: A 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.
Descripción : Communication presented at the 17th International Congress on Acoustics, Rome, 2-7 September 2001.
ISBN : 88-88387-01-3
Citación : 17th International Congress on Acoustics, Underwater Acoustics, Ocean Acoustic Tomography, 6C.06.01
Appears in Collections:(IFA) Comunicaciones congresos

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