Patent ID: 7602477
Filing Date: 2009-10-13
Classification: G01S

Abstract:
1. A radar device comprising: radar means that emits an outgoing wave in a predetermined detection area and outputs a reception signal according to intensity of a reflected wave of the outgoing wave, the reflected wave being reflected by an object; determination means that determines a condition in which no object is present in the detection area; storing means that stores a noise reception signal corresponding to a noise outputted from the radar means in association with emission of an outgoing wave by the radar means when the condition in which no object is present in the detection area is determined and the outgoing wave is emitted by the radar means; differentiation means that calculates a subtraction signal by subtracting the noise reception signal stored by the storing means from the reception signal outputted by the radar means; and object detection means that compares the subtraction signal with a predetermined reference value and detects the object reflecting the outgoing wave based on the subtraction signal equal to or larger than the reference value, wherein the object detection means further includes an analog-to-digital (A/D) conversion means, the radar means emits a plurality of outgoing waves in different directions in the detection area, and the radar device further comprises: