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This work reported a one-step electroposition to fabricate a graphene nanosheets doped polypyrrole modified gold (PPy/GENS/Au) electrode at the on-chip three-electrode-system electrochemical sensor array. The PPy/GENS/Au electrode exhibited excellent electrochemical properties of large current response, good reproducibility and stability. When applied for the detection of hydrogen peroxide (H2O2),...
Three kinds of direction-of-arrival (DOA) estimation methods based on acoustic vector sensor (AVS) array are studied in this paper. The detection and DOA estimation performances are analyzed by computer simulation, and the results show that the AVS array cross-spectrum estimation method is better than the AVS array beamforming and the AVS array average acoustic intensity method, especially under low...
This paper proposes an optimized cross array passive acoustic source localization method based on Crosspower-Spectrum Phase. This method including several optimized strategies successfully improves the real-time performance and reliability of localization in applications. Firstly, according to the characteristics of the cross correlation function, some criterions are designed to eliminate the abnormal...
Recently, the sparse overcomplete signal representations have been introduced to solve the direction-of-arrival (DOA) estimation problem by sensor array. However, it still has high computational complexity, and as the dictionary, i.e. a collection of possible direction response vectors, is required to be ldquoovercompleterdquo, it has to cover all the possible DOAs both of the interesting signals...
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