1) acoustical diffraction tomography
声衍射层析术
2) diffraction tomography
衍射层析
1.
Based on the first order Born approximation and the plane wave expansion of the Green function in two-dimensional(2-D) scattering problem under the plane wave illumination,a 2-D diffraction tomography(DT) imaging algorithm is presented.
以一阶Born近似和格林函数的平面波谱展开为基础,导出了平面波激励情况下的二维衍射层析成像算法并给出了详细的算法处理流程。
2.
The basic formula of the diffraction tomography with time-varied incident wave was established.
建立了时变入射波下的衍射层析基本公式。
3.
A new three-dimensional diffraction tomography,based on intensity correlation imaging,is demonstrated.
提出了一种基于强度关联成像的新型三维衍射层析技术。
3) ultrasound diffraction CT (UDCT)
超声衍射层析成像(UDCT)
4) Diffraction tomography
衍射层析成像
1.
A fast object reconstruction algorithm based on diffraction tomography was derived for ground penetrating radar.
为了利用探地雷达快速检测、定位甚至识别地下目标物体,本文在衍射层析成像的基础上,给出了一种线性探地雷达目标重建算法。
2.
The idea of multi-band ultrasound diffraction tomography is proposed,and the simulation of algorithm for image reconstruction shows its time shortens about 70% compared with that of single frequency method.
根据傅立叶衍射投影定理,不同频率超声波得到的投影数据的傅立叶变换分布在复平面为不同半径的圆弧,提出了多频率超声衍射层析成像思想,并进行了实验研究,重建的时间比单频率法短约70%。
5) diffraction tomography algorithm
衍射层析算法
1.
A 2D diffraction tomography algorithm for ground penetrating radar is presented in this paper.
给出了二维情况下进行地下目标反演的线性衍射层析算法。
6) photoacoustics tomography
光声层析术
补充资料：声衍射
声衍射
物理学术语。又称“声绕射”。由于介质中有障碍物或介质的不连续性，投射声波在介质上产生散射，投射波与散射波的叠加即为衍射。衍射表现为投射波的波阵面出现了畸变或波列偏离其直线行程，能达到只沿直线行进所不能达到的区域，故称声绕射。它同障碍物的线度与声波波长之比有关。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条