MIMO Design and Experimental Verification of Wall Perspective Imaging Radar System

Abstract

Wall Perspective imaging radar uses the penetrating property of electromagnetic waves to image the inside of media, which can be applied to the detection of pipelines and buried objects inside walls, security and other fields, and has important application value. The existing wall Perspective imaging radar mostly adopts single transmitting and single receiving system, which cannot meet the demand of fast scanning imaging, and the penetrating imaging radar of MIMO system is less studied. To address this problem, this paper proposes a perspective imaging MIMO radar array design method based on the equivalent array. The method uses the principles of equivalent phase center and spatial convolution to transform the MIMO array design into virtual equivalent array design, firstly, the virtual equivalent array is designed according to the radar system index, and then the MIMO configuration is designed by combining the near-field array beam coverage. In addition, a wall perspective MIMO radar imaging system is built using a vector network analyzer and a 2D mobile platform to verify the feasibility of the proposed wall perspective imaging MIMO radar array design method.