Tracking broadband plane waves using 2D adaptive FIR fan filters

A novel composite method is proposed to track a broadband plane wave (PW) based on it's direction of arrival (DOA) using 2D adaptive FIR fan filters. This method exploits a closed form expression derived for the unit impulse response of a 2D fan filter so that only one variable of optimization is required. Further reductions in algorithmic complexity are achieved using a unit impulse thresholding technique

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