基于测距的无线传感器网络定位算法研究

摘要

无线传感器网络是通过布设许多移动或固定的传感器,采用多跳和自组织的形式构建的无线网络.在网络区域内,对象的信息通过探知、收集、处理和传输传递给网络的所属者.文章重点研究无线传感器网络定位技术,通过对到达时间差TDOA(Time Difference of Arrival, TDOA)定位技术的研究,提出了移动目标的被动定位算法和定位中心主动定位算法,并在MATLAB平台上进行仿真研究,对可能影响定位精度的因素进行了分析.%Wireless sensor network is a wireless network made up of a number of static or mobile sensors with self-organization and multi-hop. Messages are sent to the owner of the network via detection, acquisition, processing and transmission within a network area. After the analysis and evaluation of existing popular mobile positioning technology, the paper proposed Moving Target Passive Localization Algorithm and Localization Center Active Localization Algorithm, which are based on the original TDOA localization algorithm. Besides, the simulation on MATLAB revealed the factors that may influence the positioning accuracy.