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. 03, 1992
Filed:
Jul. 13, 1990
James G Bull, Issaquah, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
An over-the-horizon, synthetic aperture radar (OTHSAR) system (10) is disclosed. The OTHSAR system is used to locate moving objects (14) at long distances in response to modulated high-frequency radiation reflected by the objects and distinguishes the objects from stationary clutter (16) that also reflects the radiation. Specifically, a central processor (26) synthesizes information received from an antenna (18) and receiver (22) over an interval of time t.sub.s to enhance azimuth resolution. Although ambiguous Doppler information is likely to be received from the moving object and the stationary clutter, the antenna is selected to have a real antenna beam that resolves the ambiguous data, ensuring that conflicting clutter data is eliminated.