A New Method of Complex Target Shape Reconstruction for UWB Through-Wall Radar

Through-wall imaging techniques with ultra-wideband (UWB) radar are promising candidates for non-destructive detection, especially in disaster areas like calamity rescue scenarios, counter-terrorism and so on. These applications always require high-resolution target imaging to identify the object shape. Based on this requirement, a complex target shape reconstruction method for UWB radar is proposed to realize the shape estimation of the target behind walls. As the application is a near field problem, the method offsets the influence from walls using the incident angle of the radar echo calculated by the time-delay difference curve, and estimates the target boundary effectively. Simulation result of target behind wall with complex shape shows that the propose method can remove the influence from wall and estimate the target boundary effectively.