tailieunhanh - Báo cáo toán học: " Localization in mobile wireless and sensor networks"

Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quốc tế đề tài: Localization in mobile wireless and sensor networks | Nicoli et al. EURASIP Journal on Wireless Communications and Networking 2011 2011 197 EURASIP Journal on . http content 2011 1 197 Wireless Communications and Networking a SpringerOpen Journal EDITORIAL Open Access Localization in mobile wireless and sensor networks Monica Nicoli 1 Sinan Gezici2 Zafer Sahinoglu3 and Henk Wymeersch4 Accurate localization or tracking of wireless devices is a crucial requirement for many emerging location-aware systems. Fields of applications include search and rescue medical care intelligent transportation locationbased billing security home automation industrial monitoring and control location-assisted gaming and social networking. During the last few years there have been intensive research activities in this area and various solutions have been investigated. The main trend now is toward the integration of heterogeneous technologies to ensure global coverage and high accuracy in all possible scenarios leading to a seamless localization system available anywhere anytime. While satellite-based navigation is well consolidated for open sky scenarios localization in harsh environments . indoor or in urban canyons is still an open issue that requires complementary wireless networks. Cellular systems local personal area networks ad hoc and wireless-sensor networks can be configured to support localization functionality. Indoor environments however are particularly challenging because of severe multipath and non-line-of-sight NLOS propagation. In this context advanced signal processing algorithms must be employed in order to guarantee positioning robustness such as NLOS identification and mitigation fusion of data from different sources and Bayesian methods to enclose any a priori information . dynamic models for mobile positioning . An important area of research is cooperative localization which is expected to significantly improve both accuracy and coverage by exploiting all the available measurements on a