High speed ambiguity function evaluation by optical processing

Details High speed ambiguity function evaluation by optical processing High speed ambiguity function evaluation by optical processing

1979-12-20

1982-01-12

Gruber, Felix D.

Boots, shoes, and leggings

343 9PS, 364861, G06G 900

Patent

active

043108946

ABSTRACT:
An optical system which computes the ambiguity integral using one-dimensional spatial light modulators rather than the two-dimensional data masks or spatial light modulators used in the prior art is revealed. The coding is accomplished by compressing the light beam along one dimension, passing it through a one-dimensional spatial light modulator, and re-expanding the beam along the compressed dimension. The signal may be rotated to produce a linear dependence. In the preferred embodiment an acousto-optic cell commonly known as a Bragg cell is the one-dimensional spatial light modulator chosen.

REFERENCES:
patent: 3509565 (1970-04-01), Wilmotte
patent: 4071907 (1978-01-01), Casasent
patent: 4087815 (1978-05-01), Garrison et al.
patent: 4099249 (1978-07-01), Casasent
patent: 4123142 (1978-10-01), Fleming
Sprague et al.: Time Integrating Acoustooptic Correlator, Applied Optics Jan. 1976, vol. 15 No. 1, pp. 89-92.
Blanchard: A Radar Electro-Optical Processor, Symposium on Optical and Acoustical Micro-Electronics, Polytechnic Institute of New York Apr. 1974 pp. 495/509. _

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