WSNs localization scheme based on imperialist competitive algorithm
Aiming at shortcomings such as slow convergence rate and low precision of genetic algorithm(GA) for wireless sensor networks (WSNs) positioning,present a scheme using imperialist competitive algorithm (ICA) to optimize WSNs localization.Firstly,method of sampling is used to estimate initial position of unknown node; Secondly,relevant information of beacon node and adjacent node is relied to build 3D space mathematical localization model which based on the minimum global error as the objective function ; Finally,ICA,the latest social heuristic algorithm,is used to optimize positioning.Experimental results show that,compared with the GA,the ICA algorithm has advantages of high positioning precision,and fast convergence speed in WSNs positioning.