| A method for improving the performance of MVDR beamforming |
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| 作者姓名： | ZHU Shimeng SONG Mingkai and GONG Xianyi |
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| 摘 要： | I.IntroductionInbeamformingforsonaritisthemostinterestingfunctionthatonecanobtainthctimcwaveformoutputsofthedesiredsignaltobedetectcdwithanimprovcdSignal-to-NoiseplusInterferenceRatio(SNIR).ItiswellknownthatMVDRbeamforminghasoptimumcapabi1i-hesofsignalprotection,interferenccremovalandnoisercduction.NootherbeamformingtochniquecanyicldalargerincreascinSNIR.Itspoweroutputcanbeusedasawavenumberspectrum(bearing)estimation,whoseprecisionorreso1utionisdeterminedprimarilybySignal-to-NoiseRatio…
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A method for improving the performance of MVDR beamforming |
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| Authors: | ZHU Shimeng SONG Mingkai and GONG Xianyi |
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| Institution: | Hangzhou Applied Acoustics Research Institute. Hangzhou 311400 |
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| Abstract: | Minimum Variance Distortionless signal Response (MVDR) beamforming can be used as a wavenumber spectrum (bearing) estimation, whose precision or resolution is deter mined primarily by signal-to-noise ratio. This paper presents a method for improving MVDR beamforming bearing resolution by using an enhancement factor in its weight vector design for emulating a high signal-to-noise ratio condition which is known to be a principal factor in res olution improvement. This method can providc improved rcsolution not at the expense of sig nal-to noise plus interference ratio gain. Some of computer simulation results are also given. |
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| Keywords: | MVDR beamforming Spectrum estimation Bearing resolution |
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