Deconvolution of decomposed conventional beamforming
T. C. Yang
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.
Topics & Concepts
DeconvolutionBeamformingSIGNAL (programming language)Blind deconvolutionSignal-to-noise ratio (imaging)AlgorithmSubspace topologyComputer scienceSignal processingTRACE (psycholinguistics)Noise (video)MathematicsArtificial intelligenceTelecommunicationsProgramming languageLinguisticsRadarPhilosophyImage (mathematics)Direction-of-Arrival Estimation TechniquesSpeech and Audio ProcessingAntenna Design and Optimization