Communications: directive radio wave systems and devices (e.g. – Determining distance – With frequency modulation
Reexamination Certificate
2005-02-15
2005-02-15
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With frequency modulation
C342S070000, C342S118000, C342S147000, C342S158000, C342S189000, C342S192000, C342S195000
Reexamination Certificate
active
06856278
ABSTRACT:
A radar performs accurate and appropriate pairing even if peaks of approximately identical signal intensities or even if a plurality of peak groups having identical representative beam bearings exist in the frequency spectrum. First, the peak frequency of a peak which appears in the frequency spectrum is determined for each of an up-modulating interval and a down-modulating interval in predetermined beam bearings, and signal-intensity profiles in the beam bearings are extracted with regard to a plurality of beam portions which are adjacent to the beam bearings. Next, the correlation level between the signal-intensity profiles at the up-modulating interval and the down-modulating interval is determined, and pairing is performed in sequence starting from the profiles having a higher correlation level.
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Ishii Toru
Nakanishi Motoi
Nishimura Tetsu
Gregory Bernarr E.
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
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