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. 13, 2007
Filed:
Oct. 28, 2004
Ryuji Fukute, Hitachinaka, JP;
Ryuji Fukute, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is provided a radar system having an input amplitude correcting function in which even when a large reflection wave exceeding a dynamic range of an A/D converter is inputted, an RCS calculation without a time lag can be executed at high precision, high reliability, and low costs without using power amplification degree control such as an AGC circuit or the like. Harmonic peaks of each target peak of an FFT-processed frequency spectrum are detected. When the harmonics are detected, it is determined that the large reflection wave exceeding the dynamic range of the A/D converter has been inputted, and a lost input amplitude is corrected in accordance with a correction table showing a relation between the harmonic order and an input amplitude correction amount which have previously been recorded.