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:
Sep. 19, 1978
Filed:
Feb. 02, 1977
James E Metcalf, Arlington, TX (US);
Del Norte Technology, Inc., Euless, TX (US);
Abstract
A standard amplitude pulse is transmitted as a cyclically recurring pulse in a radar ranging system. At a receiver, identified by the pulse repetition rate of the recurring pulses, each pulse is analyzed for its deterioration from the standard in order to detect fading. An amplifier, having a controlled gain, is adjusted responsive to the analysis, and the uniformity is restored to the pulse despite variations in fading. In some cases, a threshold detection is used to prevent response to minor variations. A pulse repetition rate detector insures that the pulses are so controlled at only the identified station, and that the identified station responds only to pulses with the proper repetition rate.