Accurate Source-Number Estimation Using Denoising Preprocessing and Singular Value Decomposition

This paper proposes two accurate source-number estimation methods for array antennas and multi-input multi-output radar. Direction of arrival (DOA) is important in high-speed wireless communication radar imaging. Most representative DOA require the information advance often fail to estimate DOAs severe environments such as those having low signal-to-noise ratio or large transmission-power difference. Received signals are bandlimited narrowband signals, so proposed first involves denoising preprocessing by removing undesired components then comparing original denoised signal information. The performances were evaluated through computer simulations.