Lorenzo Capineri, Antonino S. Fiorillo, Leonardo Masotti, and Santina Rocchi
ABSTRACT
Airborne polyvinylidenefluoride transducers have been designed for robotic applications in air. Characteristics of transducer prototypes are: working frequencies from 61kHz to 86 kHz, quality factor Q from 4 to 6, and two-way insertion loss of about 90 dB. The small dimension, the lightness, and the low-cost fabrication technology allow the development of arrays or matrices for ultrasonic imaging systems in air. In this work two different image reconstruction algorithms are proposed: the first carries out a combined spectral and aperture synthesis for detecting isolated scatterers with a spatial resolution of about 2mm; the second is based on an accurate ranging algorithm with sub-millimeter resolution at distances up to 50cm. Finally, this work's application to the reconstruction of three-dimensional object profiles is discussed.1997 IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 44:36-43
© 1997, by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.