Radar apparatus

Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle

Reexamination Certificate

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Details

C342S195000, C342S196000

Reexamination Certificate

active

07023376

ABSTRACT:
The invention provides a radar that transmits a radio wave and receives an echo of the radio wave, which is characterized by possessing (1) a reception means that detects a beat signal of the echo and the radio wave, (2) a first frequency analysis means that analyzes the beat signal into frequency components, and detects a peak signal of frequency spectra obtained thereby, and (3) a second frequency analysis means that analyzes the beat signal into frequency components with a frequency resolution different from that of the first frequency analysis means, and detects a peak signal of frequency spectra obtained thereby.

REFERENCES:
patent: 5302956 (1994-04-01), Asbury et al.
patent: 5424749 (1995-06-01), Richmond
patent: 5508706 (1996-04-01), Tsou et al.
patent: 6104336 (2000-08-01), Curran et al.
patent: 6140954 (2000-10-01), Sugawara et al.
patent: 6266004 (2001-07-01), Pannert et al.
patent: 6275180 (2001-08-01), Dean et al.
patent: 6335701 (2002-01-01), Fujisaka et al.
patent: 19727288 (1999-01-01), None
patent: 9-133765 (1997-05-01), None
patent: 10-20025 (1998-01-01), None
patent: 2000-46932 (2000-02-01), None

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