The principle of Doppler frequency shift can be utilized for node localization when mobile nodes are introduced into a sensor network. In this paper, a greedy method for mobile node localization using the principle of Doppler frequency shift is presented. A localization framework which accounts for multiple nodes and multiple reception paths is first developed. Subsequently, a greedy approach to anchor path guidance for maximal node localization is proposed. The method is advantageous both in terms of energy consumption and the number of nodes localized. Experiments on mobile node localization are conducted to illustrate the effectiveness of the proposed method.
['Sudhir Kumar', 'Shriman Narayan Tiwari', 'Rajesh M. Hegde']
Greedy node localization in mobile sensor networks using Doppler frequency shift