Abstract
A novel localization method for mobile sensor node under the environment seriously affected by non-line of sight(NLOS) was proposed in order to overcome the NLOS impact on the localization of wireless sensor network nodes.Initial position was achieved by utilizing two velocity information of the mobile node—speed and direction.Then the accurate localization results of mobile nodes were gained by simple ratio computation of precise coordinates sent by the beacon nodes which were not affected by NLOS and the ultrasonic distance measurement.Simulation results show that the method can overcome the impact of local NLOS with much higher localization accuracy and less computation time cost.The method is suitable for the mobile sensor nodes with motion sensing capabilities and limited hardware resources.
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