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An Improved Localization Algorithm for DV- Hop Wireless Sensor Networks

Haohao Yuan, Jianhe Zhou, Jinxiong Chen


In the basis of DV - Hop wireless sensor networks without distance measurement, low cost, using conveniently, the paper analyzed the deficiency of the algorithm and areas for improvement, combining with the practical application of wireless sensor networks node density in the uneven and communication lines are not fixed, this paper puts forward the quantitative RSSI values, with the cumulative quantization value instead of cumulative hop, and introduced a weighting algorithm is further modified the average hop distance; using Taylor expansion method to solve the coordinates of the unknown node which reduced the algorithm complexity; finally test the improved algorithm through the simulation experiment, the results shows that the improved algorithm is superior to the traditional algorithm, also can provide algorithm support and theoretical guidance for practical applications.


wireless sensor networks, node localization algorithm, the average distance of hop, Taylor expansion.

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