Secure Location Of Distributed Nodes In The Wireless Sensor Networks

With the development of wireless sensor network, information perception,acquisition and processing technology have a revolutionary change. Logicalinformation world and the objective physical world is no longer a dream, from thenon human interactions with the natural world has happened great change. At present,wireless sensor network (WSN) which has become a future-oriented informationtechnology research center is one of the most popular research topic. Due to manyadvantages of sensor network, the WSN has a very broad application prospects. In thetechnology of wireless sensor network, the node localization technology is one of thekey technologies. In the process of Wireless sensor localization, the limited resourcenodes, deployment area without security and openness make security localizationalgorithm face with many hidden safety trouble.In order to deal with the problem above, in this paper, a new security localizationalgorithm: Malicious attacks against security positioning (Malicious attacks to holdsecurity location, MARSL) have proposed. The algorithm is mainly introduced thecomplete testing method of malicious attacks, malicious attacks dispose method, andcorrection methods of the node hop amount. Detecting malicious attacks method,mainly through detecting jump numerical of unknown node and beacon node valuewhether meet the minimum hop between numerical and triangle trilateral rules.Handling for malicious attacks mainly adopted directional packet loss method. Tojump between the nodes of numerical correction introduced a harmonic function,according to the size of the jump numerical make corresponding processingrespectively. Although MARSL localization algorithm using so many securitymechanisms, but because the complexity of each method is very small, amount ofcalculation is very little, therefore MARSL did not increase the complexity of thesensor node localization process, just add a single node with limited amount ofcalculation.By using MARSL secure localization algorithm is proposed in this paper, in thesafety network environment, the accurate positioning of sensor node performanceincrease by about20%; In the network environment under attack, accurate positioningof sensor node performance increased by10%-15%. When the beacon nodes and theproportion of malicious nodes is more than4:1, MARSL localization algorithm has ahigh positioning accuracy.