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 public services. This article provides an overview of the location, localization, and localizability

issues of wireless ad-hoc and sensor networks. Making data geographically meaningful, location information is essential for

many applications, and it deeply aids a number of network functions, such as network routing, topology control, coverage,

boundary detection, clustering, etc. We investigate a large body of existing localization approaches with focuses on error

control and network localizability, the two rising aspects that attract signi¯ cant research interests in recent years. Error

control aims to alleviate the negative impact of noisy ranging measurement and the error accumulation e® ect during coope-

rative localization process. Network localizability provides theoretical analysis on the per