Abstract:

ROC-VSS（Robust Covariation-based Virtual Spatial Smoothing）algorithmic was put forward.The DOA（Direction-Of-Arrival）estimation of coherent sources in gauss white noise can not estimate the direction-of-arrival accurately in impulse noise, but the new algorithmic resolves this problem. The principle of this new algorithmic is combined the virtual spatial smoothing algorithmic with covariation coefficient matrix. The sensors of virtual subarrays designed in the new algorithmic is equal to the total sensors of array, so the new algorithmic has no loss of array aperture. Simulation results show that the new algorithmic does well in DOA estimation of coherent sources in impulse noise and the new algorithmic can find the direction-of-arrival accurately.

Key words: direction-of-arrival(DOA) estimation, virtual spatial smoothing(VSS) algorithm, array effective aperture