A Hierarchical Active Localization Method for Dynamic Underwater Wireless Sensor Network
We study several fundamental key issues of localization in underwater sensor networks (UWSNs), and then propose a hierarchical active localization method base on the time difference on arrival (TDoA) for UWSNs, which can reduce the localization cost and extend the network lifetime. The method, which is event-driven, divides all the nodes into three groups: buoy nodes, relay nodes, and ordinary nodes. Buoy nodes, on the water surface, can provide their Global Position Systems (GPSs) information to the underwater relay nodes and ordinary nodes, while the relay nodes and ordinary nodes can localize themselves by the TDoA localization algorithm base on the received GPSs information. The ordinary nodes are event-driven and can actively report self-positions to the nearest relay nodes in the max-hops fields, and the relay nodes can relay the messages to buoy nodes. In addition, package formats for communication between nodes are defined, which make the packages short and can reduce the costs of sensor nodes in localization. To guarantee the low-power and effectiveness of communication, the nodes communicate with each other by two types of frequencies: low frequency and high frequency, the former is used in long distance communication, while the latter is used in short distance. Analysis show that our method has low communication cost in UWSNs.
wireless sensor network underwater localization TDoA
YANG Kuiwu GUO Yuanbo
Electronic Technology Institute, Information Engineering University, Zhengzhou 450004, China Compute Electronic Technology Institute, Information Engineering University, Zhengzhou 450004, China
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
2071-2075
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）