Accurate Indoor Positioning Algorithm Research

As the arrival of3G era and the development of wireless networks, the service based on locations has been given considerable attention because of the huge commercial benefit. As a result, network-based wireless location technology is becoming one of the most active research topics in communications. This dissertation focuses on network-based wireless location technology.Because of the influence of the circumstance, the estimated distances between handheld devices and base stations may deviate from the real ones seriously. This topic will be based on the analysis and summary the types and properties, on the basis of the existing localization algorithm for complex indoor environment and the circumstances of a given hot configuration model of the wireless local area network (wlan), aiming at the shortcomings of the original MUSIC algorithm an improved MUSIC algorithm to estimate doa of signal indoor positioning, and the principle and algorithm in the multipath effect, coherent source and robustness under the noise made the detailed analysis of a problem. Tracking of moving target in the network, and reduce the measurement distance estimation error and the effectiveness of the proposed algorithm is validated by computer simulation.