Acoustical Holography |
Common terms and phrases
A(zo acoustical holograms acoustical holography acoustical reference beam amplitude angle angular aperture aperture axis Berger diffracted direct transmission expression A.1 focal point Focussed Receiver focussed transducer frequencies give rise holographic plane illustrated in Fig image obtained intensity plot Lamore laser line scan main tank material structure medical diagnostics Merrow Metherell multiplied non-destructive testing object plane object position optical image Optical stop optical transparency output phase modulator photographic plate photographic transparency Plane illuminating beam plane reference beam plane wave point receiver produce propagating pulse Radar Type Systems Real image real time system receiving transducer recorded reduced reference beam wavefront resolution Ro-ro Scanning plane scatter Seismology send transducer shown in Fig signal sonar sound Sound intensities source and receiver spherical wave spot spot size surface levitation term top skin trans transmit gate Ultrasonic images ultrasound unwanted modes w₁t water surface wavelength Worlton X-rays z₁ λα
