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 A New Angle-Based Location Method Using a Forward-Link Signal | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2009 Article ID 407893 6 pages doi 2009 407893 Research Article A New Angle-Based Location Method Using a Forward-Link Signal Seung-Hun Song 1 Hyun-Ja Im 1 Ji-Won Park 1 and Tae-Kyung Sung2 1 Department of Information and Communication Engineering Chungnam National University Daejeon 305-764 South Korea 2 Division of Electrical and Computer Engineering Chungnam National University Daejeon 305-764 South Korea Correspondence should be addressed to Tae-Kyung Sung tksaint@ Received 14 April 2009 Accepted 23 June 2009 Recommended by Magnus Jansson With conventional AOA positioning using a reverse-link signal each sensor is equipped with an array antenna to measure the incident angle of the signal emitting by a mobile source. In order to perform the complicated array processing for angle measurements both the sensor size and the power consumed by the sensor can increase in RLAOA reverse-link AOA positioning. In some applications such as mobile vehicle localization the vehicle has fewer limitations in terms of size or power consumption. Rather it is desirable to make the sensor as light as possible. This paper presents a new angle-based positioning scheme using a forward-link signal. Under the assumption that a ground vehicle moves on a horizontal surface a measurement equation for the FLAOA forward-link AOA is initially derived. Using the measurement equation a closed-form solution for FLAOA positioning is proposed. With the proposed method it is also possible to estimate the azimuth of the vehicle as well as its position. The performance of the proposed method is compared to that of RLAOA positioning in a computer simulation. The simulation results show that the proposed method is potentially suitable for applications involving the localization and guidance of mobile vehicles. Copyright 2009 Seung-Hun Song et al. This is an open access article distributed under the .
