Single Beacon Cruise Positioning Algorithm in Wireless Sensor Networks  

作　　者：ZHU Darong HAN Jianghong OU Jian MIN Jie 

机构地区：[1]School of Computer and Information, Hefei University of Technology, Hefei 230009, China [2]School of Electronics and Inforraation Engineering, Anhui University of Architecture, Hefei 230601, China [3]Department of Mathematics and Physics, Anhui University of Architecture, Hefei 230601, China

出　　处：《Chinese Journal of Electronics》2013年第3期558-562,共5页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.61073161, No.71101002）.

摘　　要：Node localization is important in WSNs （Wireless sensor networks） applications. We present a new cruise positioning algorithm, where a single beacon node cruises an entire network, broadcasting its position periodically with fixed signal strength. Meawhile, an unknown node obtains the location and the corresponding distance of the beacon node. Two possible position coordinate sets for the unknown node can then be calculated, and the coordinate mean of the point set with a small variance is an unbiased estimator of the unknown node＇s coordinate. The positioning algorithm＇s computation is simple, positioning accuracy is not limited by a physical distance measuring tool, and there are no restrictions on the path of motion, which makes it more realistic. An algorithm simulation is presented to compare the original and cruise location algorithm. Numerical results show that the cruise localization algorithm can achieve good positioning accuracy.

关 键 词：Wireless sensor network Cruiselocalization Mobile beacon node Localization error Unbiased estimator. 

分 类 号：O439[机械工程—光学工程] TP212[理学—光学]