A mobile robot localization method based on radio interference

This paper presents a novel mobile robot localization method based on radio interference. The proposed approach determines the position of a mobile robot not according to radio signal strength but phase differences measured in different receiving places of radio interference signals, which are generated by the superposition in space of two unmodulated radio waves. The main features of this method are that it is applicable to 2D and 3D localization, and requiring no radio signal propagation model. Actual experimental results indicate its effectiveness.