A transducer configuration for use in acoustically imaging a target region behind an acoustically reflective layer includes a sonde having a geometrical center and constructed and arranged to support a plurality of transducers. The system includes a first transducer disposed within the sonde at a first...http://www.google.co.uk/patents/US6125079?utm_source=gb-gplus-sharePatent US6125079 - System and method for providing dual distance transducers to image behind an acoustically reflective layer
