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本文在介绍UHB(Ulirasound Holography B-scan)成像方法的同时,提出了一种新的频域补偿原理。利用这种原理,可以在成象的重建过程中对各种已知的与声传播方向有关的畸变进行补偿。文中给出了一个对不同声速的平面层进行补偿的例子。计算机模拟以及水槽试验均获得了满意的结果。 相似文献
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Computer simulation study of the electrical activity of the heart is one of the frontiersubjects of electrocardiogram (ECG) theory study. A new algorithm for simulating excitationpropagation within the heart is presented in this paper. On the basis of this, computersimulation of QRST-wave is completed on an IBM PC microcomputer. All performance ofthe model is compared favourably with that of the models implemented on main frames oron high--performance work stations abroad. 相似文献
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