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:
Feb. 24, 1987
Filed:
Aug. 16, 1985
Irving Kanter, Lexington, MA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A method of processing signals received by a four quadrant monopulse antenna to resolve the signals from two sources within the sum beam of such antenna is shown to comprise the steps of: (a) separately quadrature detecting each one of the signals (A, B, C and D) received at each one of the four quadrants to form corresponding complex signals having real (I) and imaginary (Q) terms, each one of such complex video signals being representative of a different one of the signals A, B, C and D; (b) forming the monopulse sum (A+B+C+D) signal, and monopulse difference signals [(A+B)-(C+D)], [(A+C)-(B+D)] and [(A+D)-(B+C)] and the corresponding monopulse ratios; and (c), calculating the monopulse ratios of the two signals that, when extant simultaneously, produce the corresponding monopulse ratios.