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Deconvolution of decomposed conventional beamforming
1College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310058, Chinatsihyang@gmail.com.
Abstract:
A recently proposed deconvolution method applied to conventional beamforming (CBF) shows a much higher array gain (AG) than CBF in theory, thereby providing the possibility for detecting a weak signal with a much lower signal-to-noise ratio (SNR). However, simulated data processing shows an effective AG that decreases with decreasing SNR. The reason for the performance loss is analyzed. A method based on deconvolution of the signal subspace of the CBF outputs is shown to recover most of the AG loss. It is used to trace a weak signal in bearing and time.
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