Three-dimensional Passive Localization of Near-field Source in a Multipath Environment

doi:10.3969/j.issn.1000-1093.2014.03.006

Abstract

Abstract: A localization method based on the horizontal array in a multipath environment is presented for three-dimensional passive localization of near-field source. The result of underwater acoustic image measurement is obtained in an arbitrary scanning depth, and then the focal points of the signal source and the virtual source formed by surface reflection could be located by spectral peak searching. The three-dimensional coordinate is corrected by the geometric relationship of the focal points. The simulation shows that the different scanning depths have little impact on localizaton accuracy, the localization error increases with further distance between the source and the array, and the method is invalid when the source is much closer to the array because of aliasing in the two focal points. The method could three-dimensionally localize the near-field passive source within a certain region in a multipath environment.

Key words: information processing, horizontal array, multipath channel, three-dimensional passive localization

CLC Number:

TB566

LIANG Guo-long， HAN Bo， SUN Xiang-qian. Three-dimensional Passive Localization of Near-field Source in a Multipath Environment[J]. Acta Armamentarii, 2014, 35(3): 326-332.

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