精选优质文档-倾情为你奉上车辆防撞系统外文翻译In one aspect the present invention broadly resides in a self-propelled robotic vehicle responsive to a radio frequency signal from a transmitter means including a vehicle frame means; at least two spaced apart receiver means adapted to receive the signal from the transmitter means; a processor operatively associated with the receiver means, said processor is programmed to process input from the at least two spaced apart receiver means to locate the position of the
