Patent ID: 7245359
Filing Date: 2007-07-17
Classification: G01S

Abstract:
1. A radar system of a vehicle, the radar system having a light emitter for repeatedly emitting laser light so that the laser light is emitted over a predetermined angular range at least along width direction of the vehicle in each light emission, a photoreceptor for outputting light reception signals, which are output from photoreceptive elements in accordance with intensity of reflected laser light reflected by a reflection object, the photoreceptive elements being arranged at least along the width direction of the vehicle, the radar system comprising: a comparator for comparing the light reception signal output from each photoreceptive element with a predetermined standard signal and for outputting for each photoreceptive element a comparison signal indicating two different states corresponding to a result of the comparison; an integrator for sampling the comparison signal of each photoreceptive element and for converting the comparison signal into one-bit digital data while a predetermined time passes after the laser light is emitted, wherein the integrator integrates the digital data for each photoreceptive element based on emitting timing of the laser light every time the laser light is emitted, and outputs the integrated data; and a sensor for comparing the integrated data of each photoreceptive element with a predetermined integration standard value and for sensing the reflection object based on the integrated data equal to or greater than the integration standard value.