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A New Localization Method for Marine Wireless Sensor Networks Based on Asymmetric Round-trip Ranging |
QIN Yu-hua1,2,LIU Hao-ran1,2,DENG Yu-jing1,2,WANG Xing-qi1,2,LIU Bin1,2,YIN Rong-rong1,2 |
1. Electrical Engineering College, Yanshan University, Qinhuangdao, Hebei 066004, China
2. Hebei Province Key Laboratory of Special Optical Fiber and Optical Fiber Sensing, Yanshan University, Qinhuangdao, Hebei 066004, China |
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Abstract A new localization method for marine wireless sensors networks based on asymmetric round-trip ranging(LMARR) is proposed. The algorithm uses the time difference between the asymmetric reception and transmission of ranging information between nodes to calculate the seawater sound velocity and the unknown between nodes. The distance between a node and its neighbors reference node, converts the three-dimensional distance information into two-dimensional, and uses the least square method to complete the localization calculation. Compared with the SWN and ARTL algorithms, simulation results show that the LMARR algorithm can effectively improve the accuracy of node localization, especially in the areas where the sound velocity of seawater continuously changes at a depth of 20~120m, the localization accuracy is 20% higher than the SWN algorithm, and is 33% better than ARTL. In addition, the LMARR algorithm also has high stability.
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Received: 03 July 2019
Published: 28 August 2020
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Fund:;Science and Technology Research Projects of Hebei Higher Education Institutions |
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