Accession Number : ADD001792

Title :   Digital Frequency Correlator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Linder,John L

Report Date : 06 May 1975

Pagination or Media Count : 9

Abstract : The patent describes a digital frequency correlator circuit for comparing the frequencies of a plurality of a-c signals to determine if they are coherent within a predetermined number of cycles. The a-c signals are converted into digital numbers representing their frequencies. The digital numbers are subtracted and the difference is compared, utilizing an exclusive-or circuit, with a predetermined number of cycles. If the difference is greater than the predetermined number of cycles, a logic 0 is outputted. If the difference is equal to or less than the predetermined number of cycles, a logic 1 is outputted.

Descriptors :   *Correlators, *Patents, Circuits, Digital systems, Frequency, Comparators

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE