The use of 'vibro' ground improvement techniques in the United Kingdom

SIGLEAvailable from British Library Document Supply Centre- DSC:2277.48(BRE-IP--5/89) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Theoretical researches, computer simulations and experimental investigations of waveguide acoustooptical correlators for photonic systems

The modern methods of optical information processing allow to solve the problems of fast computing of the following mathematical operation: Laplace and Fourier transforms, correlation, etc. The above mentioned procedures can be realised by planar acoustooptical devices. 3D image reconstruction, processing of particle image velocimetry images, and more general spatial and temporal optical flows can be solved by using a local correlating technique based on 1D correlation. This work deals with design and development of time integrated acoustooptical correlator used for real time video signal processing for project. INTAS-93-3352. Analyses of waveguide acoustooptical Bragg (WAOB) cell and optical scheme of the correlator, computer simulations and experimental investigations of the experimental sample of the correlator have been done. (orig.)SIGLEAvailable from TIB Hannover: RR 8958(11) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman