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 im-provements of SN location information security as its design tar-gets,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 local-ization 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.
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