Accession Number : ADD011942

Title :   Polychromatic Time-Integrating Optical Processor for High-Speed Ambiguity Processing.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lee,J N

Report Date : 23 Jul 1985

Pagination or Media Count : 9

Abstract : A signal processor for generating the ambiguity integral using a modulatable, broadband, incoherent lightsource, a multiplicity of acousto-optic cells and diffraction gratings, and a two-dimensional time-integrating photodetector array. The various colors of the source spectrum are shifted by differing radio frequencies. These modified spectral components are also modulated by and input signal and serve as input sources for performing a multiplicity of correlations using an acoustooptic cell with an unknown Doppler-shifted signal. The answer is displayed on a two-dimensional time-integrating photodetector array where the spectral components are dispersed within the columns. The row corresponding to the color that has been properly frequency-compensated will contain the correlation or ambiguity peak, thereby identifying the Doppler component. Position within the row determines range. (Author)

Descriptors :   *PATENTS, *OPTICAL PROCESSING, *SIGNAL PROCESSING, SIGNAL GENERATION, SPECTRA, ACOUSTOOPTICS, DOPPLER EFFECT, LIGHT SOURCES, TWO DIMENSIONAL, REAL TIME, PEAK VALUES, DOPPLER EFFECT, INCOHERENCE, DIFFRACTION, CELLS, CORRELATION, SIGNALS, GRATINGS(SPECTRA), BROADBAND, AMBIGUITY, INVENTIONS, PHOTODETECTORS, MODIFICATION, ARRAYS, COLORS, INPUT

Subject Categories : Acoustooptic and Optoacoustic Devices
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE