The phase recovery technique has previously been used to determine the
vibration properties of an ultrasonic transducer from its radiated pr
essure intensity field measured over two planes parallel to the transd
ucer's aperture. The results were comparable in quality to those obtai
ned by the Fourier optics back-projection method. This contribution re
ports on further work carried out on phase recovery and source reconst
ruction using a single plane of intensity or amplitude data only. (C)
1998 Elsevier Science B.V. All rights reserved.