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Researches on the measurement of distribution image of radiated noise using focused beamforming
Authors:HUI Juan  HU Dan  HUI Junying  YIN Jingwei
Institution:College of Underwater Acoustic Engineering of Harbin Engineering University Harbin 150001
Abstract:A method using focused beamforming to measure the distribution image (under-water image) of submarine and surface ship's noise sources is presented. Level linear array can measure the target image on water level, but the multi-path interference of underwater acoustic channel may affect the quality of it. Virtual time reversal mirror and virtual array can both solve the problem very well; they make the image with high resolution.
Keywords:beamforming  radiated noise  image  distribution  measurement  make  high resolution  time  reversal  mirror  virtual  linear array  problem  interference  acoustic  channel  affect  quality  Level  target
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