These measurements validate the designed system in measuring small and wideband vibration of an object with weak reflection surface.
验证了所设计系统测量弱反射和宽带微振动的可行性。
参考来源 - PSD激光三角法测量扬声器薄壳振动模态·2,447,543篇论文数据，部分数据来源于NoteExpress
弱反射波信号识别是声波法煤层厚度探测中的一个关键问题。
To identify the signal of the weak reflected wave is a key problem to detect the thickness of the coal seam by using elastic wave.
试验表明，反q滤波对提高弱反射能量、提高分辨率和增强连续性都是有利的。
Experiments show that inverse Q filtering favours the improvement of weak reflections, resolution and lateral continuation.
通过与钻井资料对比可知，频谱分解技术可以刻画不同频率强反射、弱反射的边界。
It is known by correlation with drilling data that the spectral factorization can describe the boundaries of strong reflection and weak reflection in different frequencies.
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