Radio-wave radar system and adaptive cruise control system

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

C342S082000, C342S083000, C342S084000, C342S099000, C342S109000, C342S112000, C342S130000, C342S131000, C342S132000, C342S134000, C342S137000, C342S071000, C342S111000, C342S116000

Reexamination Certificate

active

07136013

ABSTRACT:
In a radio wave radar system using a two-frequency CW modulation method, it is possible to detect a distance between a host vehicle and a forward vehicle and to realize a stable ACC following travel, even in a condition in which the relative speed is 0. By combining the two-frequency CW modulation method with the frequency pulse CW modulation method, that is, by using combination with the two-frequency CW method when the relative speed occurs and the frequency pulse CW method when the relative speed is close to 0, even if the relative speed is 0, the IF signal obtained from the reflected wave from the forward vehicle can be generated to detect the existence of the ACC target vehicle, so that it is possible to realize a stable ACC following travel.

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patent: 7002512 (2006-02-01), Isaji
patent: 7061424 (2006-06-01), Kuroda et al.
patent: 2003/0151542 (2003-08-01), Steinlechner et al.
patent: 2003/0184469 (2003-10-01), Brosche
patent: 2003/0210174 (2003-11-01), Nakamura
patent: 2000-292530 (2000-10-01), None
patent: 3203600 (2001-06-01), None
patent: WO-92/19980 (1992-11-01), None
European Search Report Mailed Nov. 26, 2003.

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