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:
Apr. 21, 2009
Filed:
Oct. 26, 2007
Motoi Nakanishi, Nagaokakyo, JP;
Motoi Nakanishi, Nagaokakyo, JP;
Abstract
A radar that detects whether spike noise due to an interference with a transmission signal from an object vehicle is superimposed on a beat signal obtained from the transmission signal and a reception signal. When the spike noise is detected, a threshold for extracting a peak from a frequency spectrum is temporarily increased. Normally, a threshold (TH) is set not so as to extract background noise as a target peak. When the spike noise is detected, a noise floor level (NFL) of the frequency spectrum is determined on the basis of the maximum absolute value of the spike noise, and a threshold (TH) higher by a predetermined amount ΔL than the threshold THis set. This allows a proper target peak to be accurately extracted without mistakenly extracting many peaks caused by the noise as the target peaks.