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. 22, 1986
Filed:
Mar. 21, 1983
Isaac E Kliger, Lexington, MA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A method is disclosed to measure the range and altitude of a radio frequency signal jamming source carried on an airborne platform, signals from such source traveling to a pair of airborne observation points over a direct path and an indirect path, such method including the steps of, before operation, assuming different altitudes for each one of the airborne observation points, calculating and storing sets of numbers representing lines of position characterizing selected values of the difference, dR, between the lengths of the direct and indirect paths, and then, in operation, measuring dR to derive an address indicating the particular one of the stored sets of numbers describing the actual line of position from each observation point to the signal source, triangulating to determine the actual location of the signal source on the actual line of position and displaying the range and altitude of the signal source.