| 摘要 |
A method and apparatus for use in generating and imparting a low frequency, directed energy wavefield are disclosed. In a first aspect, the presently disclosed technique includes a low frequency directional array, comprising: a plurality of array elements capable of generating a low frequency, directed energy wavefront; and a canceling element capable of actively canceling a spurious lobe of the wavefront. In a second aspect, the presently disclosed technique includes a method, comprising: imparting a low frequency, directed wavefront; and actively canceling a spurious lobe of the wavefront.
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