This paper discussed the basic theory of wave-field transform, migration imaging and surface extension, introduced a suitable method about 3-D virtue velocity continuous analysis, solved the question of velocity extraction from measured data in migration imaging.
文中介绍了波场变换,偏移成像和曲面延拓的基本理论,引入比较合适的三维的虚拟速度连续分析方法,解决了隧道掌子面前方不良地质体的瞬变电磁波场变换延拓成像中对实测资料的速度提取问题。
参考来源 - TEM虚拟波场三维连续速度分析及其在隧道超前预报中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Holographic optical elements (HOE) can transform optical wave field.
全息光学元件能够完成光波场的转换。
The normalized full gradient and phase of gravity anomalies have been studied by potential field conversion and fast Fourier transform in wave-number domain.
用波数域的位场转换和快速傅立叶变换理论研究重力归一化总梯度和归一化相位；
Study the international research in the field, it has used surface acoustic wave device or switched-capacitor circuits to realize wavelet transform and its reconstruction devices.
从目前国内外对该领域的研究状况来看，已经有应用声表面波器件及开关电容电路进行小波变换及重构器件的实现。
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