RCS Effects on Passive Millimeter-Wave Indoor Imaging Under Noise Illumination

Passive imaging, particularly in indoor environments, has been widely utilized for applications such as surveillance. However, it faces certain limitations in controlled indoor scenarios. By introducing noise as an illumination source, it becomes possible to actively enhance the imaging scene while preserving the inherent advantages of passive detection. This paper investigates RCS effects on passive indoor imaging under noise illumination. In our experiment, the influence of two incident angles of RCS on imaging results was examined, with different attenuation levels applied to analyze the indoor imaging performance. These investigations underscore the importance of optimizing the incident angle to achieve effective detection and high-quality imaging performance under noise illumination. The findings offer valuable guidance for improving future imaging quality under noise illumination.