The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 23, 2017

Filed:

Dec. 02, 2013
Applicant:

The United States of America As Represented BY the Administrator of the National Aeronautics and Space Administration, Washington, DC (US);

Inventors:

Norman Prokop, South Euclid, OH (US);

Michael Krasowski, Chagrin Falls, OH (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/125 (2006.01); G06F 17/15 (2006.01);
U.S. Cl.
CPC ...
H03K 5/125 (2013.01); G06F 17/15 (2013.01);
Abstract

A two input time domain correlator may perform analog correlation. In order to achieve high throughput rates with reduced or minimal computational overhead, the input data streams may be hard limited through adaptive thresholding to yield two binary bit streams. Correlation may be achieved through the use of a Hamming distance calculation, where the distance between the two bit streams approximates the time delay that separates them. The resulting Hamming distance approximates the correlation time delay with high accuracy.


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