A Robust and Fast Imaging Algorithm with an Envelope of Circles for UWB Pulse Radars

Sensor network systems with UWB signal have a great potential for a fast communication and a high-resolution imaging, which are required for house-hold robots or rescue robots. For this application, we have already proposed a fast imaging algorithm, SEABED based on a reversible transform between the received signals and the target shape[1]. However, the image with SEABED is instable in a noisy environment because it utilizes derivative operations. In this paper, we propose a robust and fast imaging method with an envelope of circles.