Patent ID: 7504989

Claim:
An on-vehicle radar device for being mounted on a vehicle, comprising: a transmission section for transmitting a radio wave to an object; a receive section for receiving said radio wave reflected by said object; and a processing section for dividing a range, where an object is detected by receiving said radio wave, into three or more of a plurality of areas, setting a threshold of an intensity of said radio wave received for each of said plurality of areas, and judging existence of an object by comparing the intensity of said radio wave and said threshold for each areas, wherein said processing section sets a second threshold of a second angle area in said detection range to be lower than a first and a third threshold of a first angle area and a third angle area, when a traveling velocity supplied from a velocity detection device for detecting the velocity of said vehicle is a predetermined velocity or more in a status where said vehicle is automatically adjusting the velocity according to the traveling velocity of a vehicle in front.