Radar

Details Radar Radar

2004-10-24

2008-03-04

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Return signal controls external device

Radar mounted on and controls land vehicle

C342S091000, C342S192000

Reexamination Certificate

active

07339517

ABSTRACT:
A radar wherein a first threshold value is determined in accordance with the intensity of background noise; second threshold values are set in a fixed frequency area around base portions of peaks in the frequency spectrum; the higher one of these second threshold values is adopted as a decisive threshold value in each FFT bin; and a peak exceeding this threshold value is considered a target peak and detected. Thus, the target peak caused by the reflected wave from a target included in the frequency spectrum of a beat signal is surely detected and detection accuracy of the target is increased.

REFERENCES:
patent: 5892478 (1999-04-01), Moss
patent: 2003/0222812 (2003-12-01), Kishida
patent: 2004/0246167 (2004-12-01), Kumon et al.
patent: 2005/0017891 (2005-01-01), Kuroda et al.
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patent: 9-090024 (1997-04-01), None
patent: 11-344560 (1999-12-01), None
patent: 2003-050275 (2003-02-01), None
patent: 2003-294835 (2003-10-01), None
International Search Report PCT/JP2004/015903 dated Dec. 14, 2004.

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