关于现有的基于WLAN，蓝牙以及RFID等的定位算法的综述和系统比较。是content-aware下的新兴的应用领域，有很大发展空间-Location, Localization, and Localizability Location-aware technology spawns numerous unforeseen pervasive applications in a wide range of living, pro- duction, commence, and publi