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:
Jan. 11, 1977
Filed:
Oct. 03, 1974
Applicant:
Inventor:
Bertram J Goldstone, Lexington, MA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
343 177 ; 343 / ; 343-77 ; 343 / ;
Abstract
A method for correcting errors due to imbalances between the two channels of a quadrature demodulator in a radar system is shown. The contemplated method comprises generally the steps of measuring, by performing a Fourier transform on a test signal periodically impressed on the quadrature demodulator, the amplitude and phase imbalances between such channels and then deriving correction coefficients to compensate for such imbalances during operation.