An Iterative Method for Using Triangular Node Blocks to Process Node FlipAmbiguity of Node Localization in Wireless Sensor Networks[J]. 2015, 49(4): 84-90.
DOI:
An Iterative Method for Using Triangular Node Blocks to Process Node FlipAmbiguity of Node Localization in Wireless Sensor Networks[J]. 2015, 49(4): 84-90.DOI: 10.7652/xjtuxb201504014.
An Iterative Method for Using Triangular Node Blocks to Process Node FlipAmbiguity of Node Localization in Wireless Sensor Networks
An iterative method based on triangular node blocks(OPD-IP-TNB)is proposed to solve the problem of the node flip ambiguity generated in using least squares method to locate nodes in wireless sensor networks. First
the orthogonal projection detection method is adopted to detect unknown nodes to be positioned. Then the iterative method based on coordinate transformation and recursive optimization is applied to process the flip ambiguity nodes by using the stability of triangle node blocks and the whole network connectivity information. Simulation results show that the proposed method can effectively deal with the node flip ambiguity in using the least squares method
and improve localization accuracy of the whole network. Comparison with the least squares method shows that the localization accuracy improves by 3%-10% when the number of anchor nodes decreases
and by 2%-7% when the range errors decreases.
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