Two-Dimensional Target Location Estimation Technique Using Leaky Coaxial Cables

Kenji INOMATA  Takashi HIRAI  Yoshio YAMAGUCHI  Hiroyoshi YAMADA  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.3   pp.878-886
Publication Date: 2008/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.3.878
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Sensing
position detection,  leaky coaxial cable,  slot array,  Hough transform,  

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This paper presents a target location estimation method that can use a pair of leaky coaxial cables to determine the 2D coordinates of the target. Since convention location techniques using leaky coaxial cables can find a target location along the cable in 1D, they have been unable to locate it in 2D planes. The proposed method enables us to estimate target on a 2D plane using; 1) a beam-forming technique and 2) a reconstruction technique based on Hough transform. Leaky coaxial cables are equipped with numerous slots at regular interval, which can be utilized as antenna arrays that acts both as transmitters and receivers. By completely exploiting this specific characteristic of leaky coaxial cables, we carried out an antenna array analysis that performs in a beam-forming fashion. Simulation and experimental results support the effectiveness of the proposed target location method.