Multi-path suppression algorithm for through-the-wall imaging

Abstract

Through-the-wall radar has been used in rescue missions, behind-the-wall targets detection, surveillance and reconnaissance etc. However, through-the-wall radar encounters two major problems in complex environment. One is that the refraction of the unknown wall would distort the through-the-wall image. The other is that the multi-reflection between wall and walls as well as wall and targets would lead to a lot of fake targets. To solve these problems, a multi-path suppression algorithm is proposed in this study. The simulation results show that proposed algorithm can automatically estimate the thickness and dielectric parameter of the unknown wall and give an undistort image, and remove the fake targets due to the multi-path effect.

Keywords

• radar imaging
• radar detection
• object detection
• dielectric materials
• through-the-wall imaging
• through-the-wall radar
• rescue missions
• surveillance
• reconnaissance
• through-the-wall image
• fake targets
• multipath suppression algorithm
• undistort image
• multipath effect
• behind-the-wall target detection
• unknown wall refraction
• dielectric parameter