Holographic space-variant system for evaluating the ambiguity in

Details Holographic space-variant system for evaluating the ambiguity in Holographic space-variant system for evaluating the ambiguity in

1980-05-19

1982-07-13

Corbin, John K.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 9PS, 364822, G02B 2746, G01S 1358, G06G 900

Patent

active

043391761

ABSTRACT:
An optical system for creating the ambiguity function of a moving target is disclosed. The two signals which are to be used in the analysis are coded on spatial data masks as two-dimensional arrays of one-dimensional functions. The frequency scaling property of a post lens Fourier Transform is utilized to apply a variable scaling factor to at least one of the functions. This is accomplished by passing a beam of substantially coherent light through a cylindrical Fourier Transform lens before it passes through the data masks. At least one of the data masks is then set at an angle other than perpendicular to the beam path.

REFERENCES:
patent: 3509565 (1970-04-01), Wilmotte
patent: 4071907 (1978-01-01), Casasent
patent: 4087815 (1978-05-01), Garrison et al.
patent: 4123142 (1978-10-01), Fleming et al.
patent: 4286328 (1981-08-01), Bocker
patent: 4310894 (1982-01-01), Lee et al.

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