Share Email Print
cover

Proceedings Paper

Small static and dynamic target detection in nontransparent medium and opaque water
Author(s): Vera Moiseevna Ginzburg; Alexander M. Andreyev
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Target detection in water is achieved by optical registration and measurement of the shape of the surface disturbance of liquid caused by radiation pressure of ultrasound waves passing by or reflected from the object. In the first case, the effects of refraction and diffraction of a laser beam by the 'hump' are used. This method is very sensitive for detection and observation of dynamic underwater objects. In the second case the Talbot effect is used. Both methods allow to detect nd observe the dynamic objects inside a liquid. This report describes: the schemes and the equipment used for measuring the underwater objects; the results of the 'hump's' 3D shape measurement and its usage for creating 'humped' ultrasound hologram; the image of a small target produced by computer reconstruction of 'humped' ultrasound hologram. This report also demonstrates the possibility of using Talbot effect for measurement of the shape and thickness of oil films on liquid and solid surfaces and for the wettability angle measurements.

Paper Details

Date Published: 3 September 1998
PDF: 5 pages
Proc. SPIE 3373, Signal and Data Processing of Small Targets 1998, (3 September 1998); doi: 10.1117/12.324641
Show Author Affiliations
Vera Moiseevna Ginzburg, Consultant (United States)
Alexander M. Andreyev, All-Russian Institute for Optical and Physical Measurements (Russia)


Published in SPIE Proceedings Vol. 3373:
Signal and Data Processing of Small Targets 1998
Oliver E. Drummond, Editor(s)

© SPIE. Terms of Use
Back to Top