Finite Element Study of Bearing Estimation in the Presence of Underwater Multipath Scenario Using Non-Uniform Linear Array

In this paper we have analyzed the performance of ULA, NULA and virtual array in multipath scenario using sparse Bayesian learning (SBL) and beamforming techniques. Using COMSOL we have generated the impulse response of the environment at the sensors locations. Direction of arrival (DoA) estimation has been done for ULA, NULA and Virtual array for underwater environment. Array performance has been tested in computing software MATLAB. For creating real environment we have used COMSOL, a finite element analysis software. Underwater multipath environment has been created in COMSOL. SBL provide better result as compared to beamforming technique and also NULA and virtual provide better result as compared to ULA for same number of sensors.