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.

Patent No.:

US 8289211 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 16, 2012

Filed:

Apr. 14, 2010
Applicants:

Paul Tuong Truong, San Jose, CA (US);

Dennis Lee Wilson, Palo Alto, CA (US);

Inventors:

Paul Tuong Truong, San Jose, CA (US);

Dennis Lee Wilson, Palo Alto, CA (US);

Assignee:

Lockheed Martin Corporation, Bethesda, MD (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

Aspects of the disclosure provide a method for ranging. The method includes receiving by a ranging apparatus a first ranging signal transmitted from a first remote apparatus. The first ranging signal includes a first digital sequence that is a logic combination of a first group of co-prime component codes having co-prime cycle lengths. Further, the method includes detecting first component shifts of the first digital sequence corresponding to the first group of co-prime component codes, and determining a first ranging code shift of the first digital sequence based on the first component shifts.


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