【作者】 张恒；

【导师】 刘琼； 赵飞宇；

【作者基本信息】 华南理工大学 ， 软件工程， 2012， 硕士

【摘要】 无线传感器网络（WSN）是一种全新的信息获取和处理技术，在军事、医疗、环境监测和智能交通等领域有着巨大的发展前景，而定位技术是无线传感器网络研究及其应用的关键支撑技术之一，是无线传感器网络中进行目标识别、跟踪和监控等应用的前提，也是目前无线传感器网络中的热点研究方向之一。为了设计出适合无线传感器网络的节点定位算法，本文在分析了目前已有的定位算法，并从算法精确度、能量消耗和算法鲁棒性方面对无线传感器网络中的节点定位问题进行了深入研究，本文的主要内容包括以下几个方面：1、在查阅大量相关领域文献的基础之上，介绍了基于无线传感器网络定位的国内外现状，概述了无线传感器网络的体系结构和网络协议，并综述了无线传感器网络的定位算法、性能评价指标和分类方法；2、深入研究了常用的测距节点定位算法和非测距节点定位算法，着重对节点定位算法的原理和性能进行了细致的研究和分析；3、针对测距RSSI算法定位误差问题提出了改进方案，针对非测距DV-Hop算法通信量大、稳定性差问题提出了改进方案；4、完成定位算法及其改进方案在硬件平台IRIS、软件环境Tinyos上的实现，并给出了对比结果，实验结果表明，改进方案具有更高的定位精度。最后，对论文的工作进行了总结，并对未来的研究工作进行了展望。更多还原

【Abstract】 Wireless Sensor Networks（WSN） is a fairly new technology on acquiring andprocessing data information.WSN has broad application prospects in military,medicine andhealth,environment monitoring and intelligent traffic areas.As for location technology,it is akey supporting technology of research and applications based on WSN,and it is also thepremise of target recognition,tracking and monitoring applications.Besides, locationtechnology is one of the hot research directions in WSN.In order to design a suitable node location algorithm for WSN, In this paper,I analysisthe current existing location algorithms,and make a thorough study of the wireless sensornetwork node location problems about the algorithm accuracy，energy consumption androbustness. The main content of this paper includes the following aspects.1. I read lots of large amounts of relevant literature in the field.The article describes thestatus quo of location-based wireless sensor networks at home and abroad firstly, and thenoutlines the wireless sensor network architecture and network protocols,besides, itsummarizes and describes the WSN location algorithm, performance evaluation andclassification.2. I make a thorough study of commonly range-based node position algorithms andrange-free node location algorithms,and also I research and analysis the principle andperformance in detail about node location algorithms.3. This paper presents an improved solution to the RSSI algorithm about the locationerror problem,and also presents an improved solution to DV-Hop algorithm about the heavycommunication, poor stability problems.4. In this article completes the process of location algorithm and improved solution in thehardware platform IRIS and software environment TinyOS.Finally, the paper work is summarized, and the future research work is discussed.更多还原