2-Dimensional Accurate Imaging with UWB Radar Using Indoor Multipath Echoes for a Target in Shadow Regions

• FUJITA Shuhei

  Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University

• SAKAMOTO Takuya

  Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University

• SATO Toru

  Department of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University

Abstract

UWB (Ultra Wide-Band) pulse radar is promising for surveillance systems because it has an outstanding high range-resolution. To realize an accurate UWB radar imaging system, we propose a new approach that employs multipath echoes from a target in an indoor environment. Using multipath echoes, the proposed system can accurately estimate images, even for targets in a shadow region where the targets are out of sight of the antenna. We apply a simple interferometry technique using the multiple mirror image antennas generated by multipath propagation. We find that this simple method also produces many undesired false image points. To tackle this issue, we also propose an effective false image reduction algorithm to obtain a clear image. Numerical simulations verify that most of the false image points are removed and the target shape is accurately estimated.

Journal

• IEICE Transactions on Communications

  IEICE Transactions on Communications E94-B (8), 2366-2374, 2011

  The Institute of Electronics, Information and Communication Engineers

Keywords

• UWB pulse radar
• multipath scattering waves
• shadow region imaging
• interferometry
• Time-Reversal imaging

Details

• CRID: 1390282679351141376
• NII Article ID: 10030187237
• NII Book ID: AA10826261
• DOI: 10.1587/transcom.e94.b.2366
• ISSN: 17451345
• ISSN: 09168516
• Web Site: http://www.jstage.jst.go.jp/article/transcom/E94.B/8/E94.B_8_2366/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed