| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radar system for detecting a vehicle in blind corner, the radar system having high average transmission wave power and capable of improving S/N ratio of a weak signal of diffraction wave, capable of detecting an object such as vehicle entering from a dead angle into an intersection having no signal, and accordingly reducing accidents such as head-on crash. <P>SOLUTION: A radar system includes: transmission/reception means (1-7, 1'-7') for simultaneously transmitting a signal of low frequency and a signal of high frequency that have different diffraction losses and receiving reflection waves from an object respectively corresponding to the low and high frequency signals based on an FMCW system for obtaining a distance to an object according to a beat frequency signal of transmission and reception signals; and a blind-corner vehicle detection unit 8 for detecting a vehicle in blind corner with intensity difference of refraction waves based on the frequency difference. <P>COPYRIGHT: (C)2012,JPO&INPIT |
