Patent ID: 8466830
Filing Date: 2013-06-18
Classification: G01S

Abstract:
1. An electronic scanning radar apparatus, which is mounted on a moving body, the electronic scanning radar apparatus comprising: a transmission unit configured to transmit a transmission wave; a receiving unit including a plurality of antennas receiving a receiving wave coming from a target, the receiving wave being formed from a reflection wave of the transmission wave reflected at the target; a beat signal generation unit configured to generate beat signals in response to the transmission wave and the receiving wave; a frequency resolution processing unit configured to obtain complex number data calculated from beat frequencies having signal levels obtained by performing a frequency resolution for the beat signals based on a predetermined frequency width; a peak detector configured to detect an existence of the target by detecting peak signal levels of the beat frequencies; and a direction detecting unit configured to calculate an incoming direction of the receiving wave based on a normal equation having an order, the order being selected in response to a number of receiving waves led from normal equations having different orders, each of the beat frequencies being obtained from each of the antennas, the normal equations having the different orders formed based on the complex number data of the beat frequencies having detected the existence of the target.