无线传感器网络在地震区山地灾害监测中的空间定位算法
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摘要
在用无线传感器网络对地震区山地灾害进行监测的过程中,定位起到了重要的作用;通过对无线信号衰减模型的研究,在RSSI测距方法存在误差的基础上,提出了一种基于ERSS和RSSI校验相结合的EVRSSI三维定位算法;该算法对硬件要求不高,能够适应地震区山地灾害监测环境的要求,在定位精度上也有了一定的提高;模拟实验表明本算法的定位误差为0.26m,在允许存在较小误差范围内可以应用于地震区山地灾害监测的定位中。
In the process of mountain hazards monitoring for earthquake area using wireless sensor networks,location has played an important role.Through the study of radio signal attenuation model,based on the existence of error in the distance measurement of RSSI,a 3D locating algorithm based on combination of ERSS and RSSI-verify was proposed.The algorithm is low for hardware required,it can adapt to the requirements of environmental in mountain hazards monitoring for earthquake area,and also improved to a certain extent in the localization precision.The simulation experiment show that location error of the algorithm is 0.26m,which exists minor error able to apply to location in mountain hazards monitoring for earthquake area.
In the process of mountain hazards monitoring for earthquake area using wireless sensor networks,location has played an important role.Through the study of radio signal attenuation model,based on the existence of error in the distance measurement of RSSI,a 3D locating algorithm based on combination of ERSS and RSSI-verify was proposed.The algorithm is low for hardware required,it can adapt to the requirements of environmental in mountain hazards monitoring for earthquake area,and also improved to a certain extent in the localization precision.The simulation experiment show that location error of the algorithm is 0.26m,which exists minor error able to apply to location in mountain hazards monitoring for earthquake area.
引文
[1]陈丹,郑增威,李际军.无线传感器网络研究综述[J].计算机测量与控制,2004,12(8):701-704.
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[4]汪炀,黄刘生,肖明军,等.一种基于RSSI校验的无线传感器网络节点定位算法[J].小型微型计算机系统,2009,30(1):59-62.
[5]赵昭,陈小惠.无线传感器网络中基于RSSI的改进定位算法[J].传感技术学报,2009,22(3):391-394.
[6]A.Terzis,A.Anandarajah,K.Moore,and I.J.Wang.Slipsurface localization in wireless sensor networks for landslide predic-tion[A].Proceedings of the Fifth International Conference on In-formation Processing in Senor Networks(IPSN'06)[C].USA,A-pril,2006,(A):19-21.
[7]周艳,李海成.基于RSSI无线传感器网络空间定位算法[J].通信学报,2009,30(6):75-79.
[8]Chen Weike,Li Wenfeng,Shou Heng,Yuan Bing.Weighted cen-troid localization algorithm based on RSSI for wireless sensor net-works[J].Journal of Wuhan University of Technology,2006,30(2):265-268.
[2]Het,Huang C D,Blum B M,etal.Range-free localizationschemes in large scale sensor networks[A].The Proceeding of theNinth Annual International Conference on Mobile Computing andNetworking[C].USA,2003,(A):81-95.
[3]孙立民,李健中,陈渝,等.无线传感器网络[M].北京:清华大学出版社,2005.
[4]汪炀,黄刘生,肖明军,等.一种基于RSSI校验的无线传感器网络节点定位算法[J].小型微型计算机系统,2009,30(1):59-62.
[5]赵昭,陈小惠.无线传感器网络中基于RSSI的改进定位算法[J].传感技术学报,2009,22(3):391-394.
[6]A.Terzis,A.Anandarajah,K.Moore,and I.J.Wang.Slipsurface localization in wireless sensor networks for landslide predic-tion[A].Proceedings of the Fifth International Conference on In-formation Processing in Senor Networks(IPSN'06)[C].USA,A-pril,2006,(A):19-21.
[7]周艳,李海成.基于RSSI无线传感器网络空间定位算法[J].通信学报,2009,30(6):75-79.
[8]Chen Weike,Li Wenfeng,Shou Heng,Yuan Bing.Weighted cen-troid localization algorithm based on RSSI for wireless sensor net-works[J].Journal of Wuhan University of Technology,2006,30(2):265-268.
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