Portable rapid optical-beam-steering ladar system

John G. McCoy; Jack Daugherty; Howard Hyman; Murray R. Dunn; William M. Caton; Brian W. Neff; Scott K. Young

doi:10.1117/12.59200

1 June 1992 Portable rapid optical-beam-steering ladar system

John G. McCoy, Jack Daugherty, Howard Hyman, Murray R. Dunn, William M. Caton, Brian W. Neff, Scott K. Young

Proceedings Volume 1633, Laser Radar VII: Advanced Technology for Applications; (1992) https://doi.org/10.1117/12.59200
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

The properties of a pseudodeep hologram are studied. This new term refers here to an inclined thin hologram on which a one-dimensional line object is recorded by a sagittal system of beams. In this case the reconstructed image is read out only within the line corresponding to the object. It is shown that, similar to deep 3-D hologram, the pseudodeep hologram has high angular and spectral selectivity. A simple graphic method for the construction of the images restored by the pseudodeep hologram is presented. A reference-free hologram has been recorded with the help of such a system. When reading out such a hologram for a part of the object recorded on it, the associative image of the object as a whole was reconstructed. The possibilities of using the pseudodeep hologram was performing different operations are considered, including heteroassociative readout of information by the keys associated with it, recognition of pages of information by the keys associated with it, recognition of pages of information when illuminating the hologram by the objective wave, and multiple recording of information in the same region of the photographic material. In conclusion, the associative memory scheme in which the information pages are recorded on separate stripes of the pseudodeep hologram with the use of different reference sources as the keys associated with these pages has been considered. The retrieval of the pages is performed by illuminating the entire surface of the hologram with one of the reference sources

Citation Download Citation

John G. McCoy, Jack Daugherty, Howard Hyman, Murray R. Dunn, William M. Caton, Brian W. Neff, and Scott K. Young "Portable rapid optical-beam-steering ladar system", Proc. SPIE 1633, Laser Radar VII: Advanced Technology for Applications, (1 June 1992); https://doi.org/10.1117/12.59200

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available