Capon Beamforming-Based Method in IR-UWB imaging System

Recently, many studies have been focused on impulse radio UWB (IR-UWB) imaging system as the advantages of IR-UWB, such as penetrating ability and high resolution. However, it is difficult to reconstruct the information of target by antenna array in IR-UWB imaging system. Several imaging schemes, such as Capon beamforming-based method have been applied in ultra sound imaging. In this paper, the Capon beamforming-based method is proposed to apply to the IR-UWB imaging system to reconstruct a point target in free space. A circular antenna array was used for signal transceiving. According to the results, the Capon beamforming-based method is feasible for IR-UWB imaging system. The performance of the Capon beamforming-based method is better than the traditional DAS method.