Sensor Node Localization Based on Inequalities of Radio Field Intensity - Comparison of Simulation and Experiments

The multidimensional scaling (MDS) method which is often used in sensory evaluation is applied to sensor node localization, and radio field intensities observed between nodes are compared to estimate their positions. This proposed method is useful to localize sensor nodes limited their resources because it doesn´t require any special devices for localization. In this report, the localization performance is verified by both computer simulations and experiments using actual sensor nodes. The potential performance and the conditions required to realize localization with high accuracy are revealed by the computer simulation. Although the accuracy of localization obtained in the experiment has been relatively rough because of the degradation of observed radio field intensities, the possibility of accuracy improvement has also been suggested