| US 7,548,182 B2 | ||
| Radar device and radar method | ||
| Hoshibumi Ichiyanagi, Nara (Japan); Shinya Takenouchi, Otsu (Japan); Yasuhiro Satoh, Otsu (Japan); and Hiroyuki Numata, Nara (Japan) | ||
| Assigned to OMRON Corporation, Kyoto (Japan) | ||
| Filed on Mar. 23, 2007, as Appl. No. 11/726,851. | ||
| Claims priority of application No. 2006-081261 (JP), filed on Mar. 23, 2006. | ||
| Prior Publication US 2008/0030399 A1, Feb. 07, 2008 | ||
| Int. Cl. G01S 13/93 (2006.01) | ||
| U.S. Cl. 342—27 [342/70; 342/91] | 6 Claims |
| 1. A radar device for detecting an object in front of the radar device, comprising:
a plurality of antennas, wherein the object is detected based on reception signals received by the plurality of antennas;
a position specification means for specifying a position of the object by using the reception signals received by the plurality
of antennas;
a narrow angle transmission means which, when the position specified by the position specification means is in the predetermined
range, transmits a second transmission signal with a directivity of a narrower angle than that of a first transmission signal
corresponding to the reception signals used in the position specification means, and
a confirmation means for confirming the existence of the object based on a reflection signal generated by the second transmission
signal from the narrow angle transmission means being reflected by the object.
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