Title :
Solid state methods of sonar calibration
Author :
Ivanov, Alex G. ; Wright, Steven A.
Author_Institution :
Kongsberg Simrad Mesotech Ltd., Port Coquitlam, BC, Canada
Abstract :
In application to sonars and underwater transducers a variety of waterless `solid state´ calibration methods can be performed in continuous wave mode (CW). Multi-echo effects arising in such acoustical systems are negligibly small due to the large dynamic range of sonar. Systematic errors can be further eliminated by direct measurements in water. Having a test probe scanned or comprised of 1-3 composite it is possible to `photoprint´ the aperture function of multi-element, electrically shaded transducers to evaluate cross-coupling and predict sonar performance in the far field
Keywords :
calibration; measurement errors; sonar; ultrasonic transducers; 1-3 composite; 330 kHz; 90 kHz; aperture function; continuous wave mode; cross-coupling; direct measurements; far field; multi-echo effects; multi-element electrically shaded transducers; photoprint; solid state methods; sonar calibration; sonar performance; systematic errors; test probe; underwater transducers; Acoustic testing; Acoustic transducers; Calibration; Frequency; Piezoelectric transducers; Probes; Solid state circuits; Sonar measurements; Spatial resolution; Viscosity;
Conference_Titel :
OCEANS '97. MTS/IEEE Conference Proceedings
Conference_Location :
Halifax, NS
Print_ISBN :
0-7803-4108-2
DOI :
10.1109/OCEANS.1997.624190
