Sensor nodes localization based on inequalities of electric field intensity

Using simultaneous inequalities of electric field intensity observed between sensor nodes during radio communication, the nodes positions are estimated. The multidimensional scaling (MDS) method which is often used in sensitivity measurement is improved to solve sensor nodes localization problem. In the improved MDS, sensor nodes and base nodes those positions are known are dealt separately, and the initial arrangement is set by a method which is suitable for this method. We use two simple radio propagation model which describe the characteristics of electric field intensity approximately. Using these models, computer simulations are executed, and these results reveal that it is possible to estimate sensor nodes positions with high accuracy when reflection and blocking of radio waves are not occurred