Two-Dimensional Imaging of Sea-Surface Targets in the Terahertz Band

Corner reflectors are often used to simulate the attack of ship targets jamming guidance radar. The wavelength of the terahertz band is shorter, and therefore the identification ability of airborne terahertz radar for corner reflectors is enhanced. In order to study the icosahedral corner reflectors pretending to be sea targets, the navigation system cannot recognize the real ship targets due to interference with the navigation system; in this paper, the imaging characteristics of a ship and icosahedral reflectors are obtained by turntable imaging, and the large-angle convolutional back projection (CBP) fast algorithm is used to image the electrically large-scale sea targets composed of a ship and corner reflectors. From the imaging results, the ship and corner reflector targets can be identified under the condition of prior knowledge. Considering the complex surface of ship targets and the layout of interference sources such as multiple types of corner reflectors and aluminum bars, it can better imitate ship targets and induce the detection of the terahertz radar.