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.:
Date of Patent:
Apr. 24, 2001
Filed:
Aug. 21, 1998
Applicant:
Inventors:
Paul A. Ryan, Dublin, OH (US);
Dean E. Ryan, Columbus, OH (US);
Assignee:
Ryan International Corporation, Columbus, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 5/04 ; G01S 0/328 ;
U.S. Cl.
CPC ...
G01S 5/04 ; G01S 0/328 ;
Abstract
Two pairs of signals determinative of bearing to a transmitter are developed from two pairs of directional antennas. The signals, converted to digital form, are compared to each other to develop a result signal. The result signal is used to select a primary pair out of the original two pair of signals. The non-primary pair of signals are compared to each other to develop a binary sign bit. The primary signal pair, the result signal and the sign signal are applied to a table to develop a bearing quantity related to the bearing to the transmitter.