Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Embedded Localization and Communication System Designed for Intelligent Guided Transports | Hindawi Publishing Corporation EURASIP Journal on Embedded Systems Volume 2007 Article ID 79095 8 pages doi 2007 79095 Research Article Embedded Localization and Communication System Designed for Intelligent Guided Transports Yassin ElHillali 1 Atika Rivenq 1 Charles Tatkeu 2 J. M. Rouvaen 1 and J. P. Ghys2 1 Departement Opto-Acousto-Electronique DOAE Institute des Etalons de Mesure Nationaux IEMN Universite de Valenciennes etdu Hainaut Cambresis UVHC Le Mont Houy 59313 Valenciennes Cedex 9 France 2 Institut National de Recherche sur les Transports et leur Securite INRETS 20 rue Elisee Reclus 59650 Villeneuve deAscq Cedex France Received 14 October 2006 Accepted 16 February 2007 Recommended by Samir Bouaziz Nowadays many embedded sensors allowing localization and communication are being developed to improve reliability security and define new exploitation modes in intelligent guided transports. This paper presents the architecture of a new system allowing multiuser access and combining the two main functionalities localization and high data flow communication. This system is based on cooperative coded radar using a transponder inside targets trains metro etc . The sensor uses an adapted digital correlation receiver in order to detect the position compute the distance towards the preceding vehicle and get its status and identification. To allow multiuser access and to combine the two main functionalities an original multiplexing method inspired from direct sequence-code division multiple access DS-CDMA technique and called sequential spreading spectrum technique SSS2 is introduced. This study is focused on presenting the implementation of the computing unit according to limited resources in embedded applications. Finally the measurement results for railway environment will be presented. Copyright 2007 Yassin ElHillali et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution .
