Real-Time Propagation Measurement System and Scattering Object Identification by 3D Visualization by Using VRML for ETC System. (29th October 2008)

• Record Type: Journal Article
• Authors: Kim, Minseok; Takada, Jun-ichi; Ando, Tetsuo; Soma, Ryuji
• Other Names: Ekici Eylem Academic Editor.
• Is Part Of: EURASIP journal on wireless communications and networking. Volume 2009(2009)
• Publication Date: 2008-10-29
• Subjects: Wireless communication systems -- Periodicals; Signal processing -- Periodicals; 621.38405
• DOI: 10.1155/2009/131576
• Languages: English
• ISSNs: 1687-1499

Abstract

Abstract : In the early deployment of electric toll collecting (ETC) system, multipath interference has caused the malfunction of the system. Therefore, radio absorbers are installed in the toll gate to suppress the scattering effects. This paper presents a novel radio propagation measurement system using the beamforming with 8-elmenet antenna array to examine the power intensity distribution of the ETC gate in real time without closing the toll gates that are already open for traffic. In addition, an identification method of the individual scattering objects with 3D visualization by using virtual reality modeling language will be proposed and the validity is also demonstrated by applying to the measurement data.