Patent ID: 8334802

Claim:
A radar system comprising: a first radar that transmits a first radio wave in accordance with one or more frequency modulation patterns; a second radar that transmits a second radio wave in accordance with one or more frequency modulation patterns; and a controller that controls the first radar and the second radar to detect a surrounding obstacle so that the first radio wave and the second radio wave do not continuously have a same frequency, wherein the first radar and the second radar transmit the first radio wave and second radio wave, respectively, by alternately switching between a first frequency modulation pattern and a second frequency modulation pattern that is different from the first frequency modulation pattern, and the controller controls the first radar and the second radar so that, while one of the first radar and the second radar is transmitting in accordance with the first frequency modulation pattern, the other one of the first radar and the second radar transmits in accordance with the second frequency modulation pattern.