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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。
This paper presents a new method of frequency domain compensation while introducing the imaging method of UHB (Ulirasound Holography B-scan). Using this principle, various known distortions related to the direction of sound propagation can be compensated during the reconstruction of the image. The paper gives an example of compensating plane layers with different sound velocities. Computer simulations as well as sink tests have yielded satisfactory results.