【摘要】 确定用户的位置信息有利于向用户提供方便高效的服务,基于接收信号强度的无线局域网室内定位是定位领域的一个新的研究热点。研究的难点在如何克服随机因素对信号的干扰,使定位方法具有健壮性、适应性。本文基于IEEE802.11b/g协议的无线局域网环境下定位问题的难点,分析了如何评价定位算法的性能问题,介绍目前定位方法的基本原理、优缺点及其分类,详细综述利用接收信号强度的室内定位算法,最后指出未来定位算法研究的几个方向。更多还原

【Abstract】 Locating user’s physical position is crucial of providing convenient and efficient services for the user. Received-signal-strength based indoor location in WLAN is a hot research topic in the field of location estimation. The difficulties are how to mitigate disturbance of random factors to signals, and make location estimation methods more robust and adaptable. After analyzing the difficulties of location estimation problem in IEEE 802.11 b/g WLAN, how to evaluate the performance of location estimation algorithms, current principles of location methods, their advantages and disadvantages and classifications are introduced. Then received-signal-strength based indoor location algorithms are surveyed in detail. Future research directions in indoor location estimation problem are pointed out at the end.更多还原