Communications: directive radio wave systems and devices (e.g. – Determining direction
Reexamination Certificate
2006-12-19
2006-12-19
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining direction
C342S027000, C342S028000, C342S070000, C342S118000, C342S146000, C342S165000, C342S173000, C342S174000, C342S175000, C342S195000, C342S368000, C343S711000, C343S844000, C343S876000
Reexamination Certificate
active
07151482
ABSTRACT:
A radar device (2) includes plural transmission antennas and plural reception antennas. The reception antennas constitute a reception-side antenna portion (20) and are arranged at an interval of d. The transmission antennas constitute a transmission-side antenna portion (18) and are arranged at an interval of d′=d×(n−1). The path length at which the electric wave is reflected from a target is identical between channels A9and B1,and seventeen kinds of channels (A1to A8,A9or B1,B2to B9) which are different in path length by every fixed distance are achieved. The data of the channels (A1to A9and B1to B9) using different transmission antennas are respectively collected in different measuring cycles, and an error based on the time difference between the measuring cycles is corrected on the basis of a correction value calculated from the data of the channels A9,B1.
REFERENCES:
patent: 3028593 (1962-04-01), Alford
patent: 3268890 (1966-08-01), Birge
patent: 3487408 (1969-12-01), Farren
patent: 3513471 (1970-05-01), Mooney, Jr. et al.
patent: 3618090 (1971-11-01), Garrison
patent: A-2001-99918 (2001-04-01), None
Hazumi Hiroshi
Natsume Kazuma
Denso Corporation
Gregory Bernarr E.
Posz Law Group , PLC
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