Non-Line-of-Sight Imaging of Hidden Moving Target using Millimeter-wave Inverse Synthetic Aperture Radar

High-resolution imaging of the corner-hidden moving target makes tremendous sense in the fields of urban sensing and autonomous driving. In this paper, a joint No-line-of-sight (NLOS) model and inverse synthetic aperture radar (ISAR) imaging method are proposed for millimeter-wave (MMW) imaging of the hidden moving target. In the scheme, a classical threshold method is used to remove the interference signals of the stationary background and extract the triple-reflected echo of the hidden moving target. Then, the image focusing on the moving target is achieved by the range migration algorithm (RMA) with the mirror projection of the wall. Finally, a near-field NLOS experiment system for the hidden rotating target was constructed by TI MMW sensors. The effectiveness of the method is verified by these experiments.