文章基本信息

标题：Localization Techniques in Wireless Sensor Networks
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作者：Shweta Singh ; Ravi Shakya ; Yaduvir Singh 等
期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2015
卷号：6
期号：1
页码：844-850
出版社：TechScience Publications
摘要：New advances in wireless sensor networks (WSNs) make it a significant technology. Because of its ad-hoc and infrastructure less nature, it has gained the attention of most of the researchers in past few years. In wireless sensor, network sensor nodes are having limited energy and resources. The most important characteristic of a sensor is to collect data, process it and transmit to the destination. For transmitting the data, it is desirable to know the location of sensors. In WSNs, for obtaining this kind of information we need localization techniques. Localization techniques (algorithms) are used to determine the geographical placement (location) of sensor nodes. Localization in wireless sensor network is not only useful for location determination but also it is important to provide the base of routing. It can also be useful for density control, tracking and other communication aspects, so it is very important that every node should reports its location information very accurately. As we know that GPS is very accurate in location determination but it is expensive in terms of cost and energy of nodes, so it is not useful in wireless sensor networks. There are so many localization techniques (algorithms) are proposed for wireless sensor networks. Accuracy of localization techniques is most important before implementing it. Here in this paper our main focus is on the localization error. Localization error is the difference between the actual location and the estimated location of the sensor node. This paper helps the network designers to find out which techniques/algorithms are suitable for their application
关键词：Localization; Wireless Sensor Network; Range-;Free; Range Based; Anchor node; un-localized node; Beacons;TOA; TDOA; RSSI; AOA; Centroid; HIRLOC; SERLOC;ADLA.