Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Reexamination Certificate
2007-11-28
2008-12-16
Pihulic, Dan (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
C342S109000
Reexamination Certificate
active
07466260
ABSTRACT:
In a radar apparatus, IF beat signals are detected in a first section and a second section serving as two adjacent frequency up-modulation sections of a transmitted wave. Frequency conversions such as FFTs are performed on the IF beat signals so that the frequency spectra are obtained. Subsequently, peak frequencies are detected from the frequency spectra in the corresponding sections, and the phase difference between the peak frequencies is determined. Since the phase difference calculated in this manner depends on the relative moving distance Δr during the interval between the first section and the second section, the relative moving distance Δr, the relative distance, and the relative velocity at this moment can be calculated from the phase difference.
REFERENCES:
patent: 6067048 (2000-05-01), Yamada
patent: 6072422 (2000-06-01), Yamada
patent: 6121917 (2000-09-01), Yamada
patent: 6445339 (2002-09-01), Yamada
patent: 2006/0181448 (2006-08-01), Natsume et al.
patent: 2008/0088500 (2008-04-01), Ishii et al.
patent: 9-152477 (1997-06-01), None
patent: 9-222474 (1997-08-01), None
patent: 11-326504 (1999-11-01), None
patent: 2000-171540 (2000-06-01), None
patent: 2002-098753 (2002-04-01), None
patent: WO-98/12574 (1998-03-01), None
patent: WO 2006134912 (2006-12-01), None
Ishii Toru
Nakanishi Motoi
Dickstein & Shapiro LLP
Murata Manufacturing Co. Ltd.
Pihulic Dan
LandOfFree
Radar apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radar apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4027615