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:
May. 24, 1994
Filed:
Jun. 18, 1993
Applicant:
Inventors:
James B Tsui, Dayton, OH (US);
Rudy L Shaw, Huber Heights, OH (US);
Nicholas A Pequignot, Kettering, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
342444 ; 342 13 ;
Abstract
The technique allows precise angle-of-arrival (AOA) and radio frequency measurements on non-cooperative radar signals, by exploiting precise phase measurement capabilities of frequency measurement receivers. It is assumed that the intercept receivers with this capability are on board an aircraft and there are at least two antennas available. By utilizing the phase measurements, the incident frequency and incident phase angle are calculated using formulae derived under the disclosed technique. By taking multiple samples and averaging, angle measurement errors can be reduced.