An Accurate Imaging Algorithm with Scattered Waveform Estimation for UWB Pulse Radars

Shouhei KIDERA  Takuya SAKAMOTO  Satoshi SUGINO  Toru SATO  

IEICE TRANSACTIONS on Communications   Vol.E89-B   No.9   pp.2588-2595
Publication Date: 2006/09/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.9.2588
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Sensing
UWB pulse radar systems,  SEABED,  scattered waveform estimation,  accurate shape estimation,  

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UWB pulse radars that offer target shape estimation are promising as imaging techniques for household or rescue robots. We have already proposed an efficient algorithm for a shape estimation method SEABED which is a fast algorithm based on a reversible transform. SEABED extracts quasi wavefronts from received signals with the filter that matches the transmitted waveform. However, the scattered waveform is, in general, different from the transmitted one depending on the shape of targets. This difference causes estimation errors in SEABED. In this paper, we propose an accurate algorithm for a polygonal-target based on scattered waveform estimation. The proposed method is presented first, followed by results of numerical simulations and experiments that show the efficiency of the proposed method.