Page 29 - 应用声学2019年第5期

第 38 卷 第 5 期 张海燕等： 扩散场重建格林函数检测钢轨近表面缺陷 781

成像的信噪比，当激励频率相同时，尤其相控阵阵元 [6] Yang Y, Xiao L, Qu W Z, et al. Passive detection and
数量越多，重建格林函数的信号就越好，为近表面成 localization of fatigue cracking in aluminum plates using
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像提供了更多的可能性和选择性。
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把早期时间噪声湮没的缺陷信息完美地恢复出来。
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