Secure Localization Algorithm Based on Node Cooperative for Sensor Networks  

作　　者：MA Jianguo PENG Bao 

机构地区：[1]School of Information Engineering, Southwest University ofScience and Technology, Mianyang 621002, Sichuan, China

出　　处：《Wuhan University Journal of Natural Sciences》2008年第5期636-640,共5页武汉大学学报（自然科学英文版）

基　　金：the National Natural Science Foundation of China (60272014);the National High Technology Research and Develop-ment Program of China (2005AA121520)

摘　　要：As to the safety threats faced by sensor networks （SN）, nodes limitations of computation, memory and communication, a secure location algorithm （node cooperative secure localization, NCSL） is presented in this paper. The algorithm takes the improvements of SN location information security as its design targets, utilizing nodes＇ cooperation to build virtual antennae array to communicate and localize, and gains arraying antenna advantage for SN without extra hardware cost, such as reducing multi-path effects, increasing receivers＇ signal to noise ratio and system capa- bility, reducing transmitting power, and so on. Simulations show that the algorithm based on virtual antennae array has good localization ability with a at high accuracy in direction-of-arrival （DOA） estimation, and makes SN capable to resist common malicious attacks, especially wormhole attack, by using the judgment rules for malicious attacks.As to the safety threats faced by sensor networks （SN）, nodes limitations of computation, memory and communication, a secure location algorithm （node cooperative secure localization, NCSL） is presented in this paper. The algorithm takes the improvements of SN location information security as its design targets, utilizing nodes＇ cooperation to build virtual antennae array to communicate and localize, and gains arraying antenna advantage for SN without extra hardware cost, such as reducing multi-path effects, increasing receivers＇ signal to noise ratio and system capa- bility, reducing transmitting power, and so on. Simulations show that the algorithm based on virtual antennae array has good localization ability with a at high accuracy in direction-of-arrival （DOA） estimation, and makes SN capable to resist common malicious attacks, especially wormhole attack, by using the judgment rules for malicious attacks.

关 键 词：sensor network secure algorithm cooperative antenna array 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]