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. 09, 1980
Filed:
Jun. 23, 1978
Applicant:
Inventors:
Jacques Sirven, Paris, FR;
Jean-Claude Marchais, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
343-77 ;
Abstract
To eliminate fixed echoes at the receiver of a pulse radar, incoming i-f signals are demodulated, subjected to Doppler filtering, centered and bottom-clipped to eliminate those whose amplitudes lie below a certain threshold. The centering operation and/or the magnitude of the threshold are controlled automatically as a function of the amplitude of the incoming signals as measured upstream of the Doppler filter.