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:
Nov. 02, 1999
Filed:
Jun. 03, 1998
Benedict J Nardi, Thurmont, MD (US);
Watkins-Johnson Company, Palo Alto, CA (US);
Abstract
An emitter locator for locating an emitter transmitting an emitter signal includes a plurality of scatters and a base station. The plurality of scatterers are located at predetermined positions, where each scatterer includes a modulator configured to modulate an electrical signal on an antenna and configured to receive emitter signal and to modulate the emitter signal to generate a scattered signal. The base station is configured to receive a composite signal containing the emitter signal and a plurality of the scattered signals, where the base station includes a processor configured to separate the scattered signals from the composite signal and to identify relative power levels of the scattered signals to determine a location of the emitter. Advantages of the invention include the ability to locate emitters in an efficient and cost effective manner by using scatterers and a base station.