无线传感器网络的定位机制

传感器网络是由大量低廉的微型多功能传感器节点组成的无线网络，能够广泛应用在环境、军事、生态等领域进行事件监测。位王数据是监测事件不可缺少的信息。为了准确地确定事件发生的位置，传感器节点必须首先确定自身的位置。定位机制是无线传感器网络的基本机制。本文在将定位技术分为基于距离定位和距离无关定位两种类型的基础上，详细介绍和分析了近期提出的典型传感器网络定位机制。

A Study of Localization Mechanisms in Wireless Sensor Networks

Abstrs~ A sensor network is composed of a large number of low-cost multifunctional sensor nodes. It can be wildly used for event-monitoring in various fields , such as environment,military,biology and so on. The information of location is indispensable for events-monitoring. In order to precisely locate the event, sensor nodes have to locate itself firstly. The mechanism of the localization is the most fundamental mechanism in wireless sensor network. This paper firstly classifies the localization mechanisms into two categories, range-based and range-free mechanism of localization, and then introduces and analyses these typical mechanisms in detail.