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第 38 卷 第 1 期                 毕亚峰等： 基于变换声学的角反射器的设计                                            57


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             后经过结构内部将声波引导至右侧，仍然以 10 斜                              43(11): 113001.
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             声波，其反射波都保持回向传播的特点，因此该反                                106(25): 253901.
             射器在这段频率范围内都能有较好的效果。它的工                             [10] Liu R, Ji C, Mock J J, et al. Broadband ground-plane
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             布而成的，很显然单元的特点也就决定了反射器的                                ture Materials, 2014, 13(4): 352.
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             的声反射器。这种声反射器需要利用密度各向异性                             [15] Sun Z, Jia H, Chen Y, et al.  Design of an underwa-
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