CAJ | 학술논문

节点位置信息是无线传感器网络应用的基础。基于 RSSI (Receive Signal Strength Indicator)的测距技术因其低成本和低复杂度的优点而被广泛用于无线传感器网络的定位技术中。介绍了RSSI 信号传输模型，在介绍无线传感器网络定位基本原理的基础上，分析了影响定位精度的因素。综述了近几年提出的无线传感器网络中基于 RSSI 的节点定位算法及其改进算法，现有基于 RSSI 定位算法的改进算法主要从测距精度改进、定位精度改进或误差修正改进等方面进行。最后，指出了基于 RSSI 的无线传感器网络节点定位算法的不足，并进行展望。
절점위치신식시무선전감기망락응용적기출。기우 RSSI (Receive Signal Strength Indicator)적측거기술인기저성본화저복잡도적우점이피엄범용우무선전감기망락적정위기술중。개소료RSSI 신호전수모형，재개소무선전감기망락정위기본원리적기출상，분석료영향정위정도적인소。종술료근궤년제출적무선전감기망락중기우 RSSI 적절점정위산법급기개진산법，현유기우 RSSI 정위산법적개진산법주요종측거정도개진、정위정도개진혹오차수정개진등방면진행。최후，지출료기우 RSSI 적무선전감기망락절점정위산법적불족，병진행전망。
Node position information is very important for the application of wireless sensor networks (WSNs). RSSI (Receive Signal Strength Indicator) -based node self-localization is extensively used due to its advantages in terms of low-cost and low-complexity. Based on the principles of wireless sensor net-works localization algorithms, the factors that affect the localization accuracy are investigated. Meanwhile, RSSI-based localization techniques and the improved algorithms in wireless sensor networks are analyzed and summarized. Specifically, the RSSI-based localization algorithms are improved from the aspects of distance estimation, localization accuracy and error amendment. Moreover, the open issues are proposed and concluded.