节点定位算法大致可分为两类：基于测距的算法和无需测距的算法。
There are mainly two types of localization algorithms: the range-based localization algorithms and range-free localization algorithms.
定位技术的核心是定位算法，本文主要研究基于测距的WS N自定位算法。
This paper mainly deals with the range-based self-localization algorithm in WSNs.
该文将节点定位技术分为基于测距的和无需测距的两类，介绍和分析了几种典型的定位技术。
This paper classifies the node localization technologies into two categories: range-based and range-free, then introduces and analyses several typical localization technologies.
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