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Performance study of localization techniques: Hybrid vs. non hybrid TDOA/DOA

Abstract:

In this paper, we compare the performance of a non-collaborative hybrid TDoA/DoA radiolocalization approach with a non hybrid approach. Through numerical simulations we analyze the behavior of the algorithms varying different parameters of the scenario including the SNR, the number of active/inactive nodes, the capabilities of the sensor nodes and their geometrical distribution around a fixed position of the target nodes. It was observed that in some scenarios the DoA only or TDoA only approach outperforms the hybrid approach. Also, increasing the number of sensors does not allways provides a better behavior of the algorithm in terms of reducing the mean square error.