应用于教学实验的水浸超声合成孔径聚焦成像算法  

Algorithms for water immersion ultrasonic SAFT imaging used in teaching experiment

作　　者：李丹丹[1] 吴迪[1] 王亚平[1] 滕永平[1] 

机构地区：[1]北京交通大学理学院物理系,北京100044

出　　处：《物理实验》2017年第6期6-9,共4页Physics Experimentation

摘　　要：应用JDUT-1B型超声波扫描成像实验仪得到超声B扫描图像,使用延时取整的SAFT成像算法、引入小数延时系数的SAFT成像算法以及SAFT相关性成像算法处理图像.实验结果表明:处理后的图像较处理前图像的成像效果较为明显,横向分辨率有很大提高,将SAFT成像技术应用于教学实验具有可行性.The ultrasonic B scanning images were obtained using JDUT-1B ultrasonic scanning imaging apparatus, the images were processed by the delay round-off SAFT imaging algorithm, the fractional delay coefficient SAFT imaging algorithm and SAFT correlation imaging algorithm. The results indicated that the original image showed better imaging effect when processed by the algorithms, including the obvious increase of the lateral resolution. Hence the imaging effect of the synthetic aperture focusing imaging technique was more reliable. It was feasible to apply the synthetic aperture focusing imaging technique to teaching experiment.

关 键 词：水浸超声成像 合成孔径聚焦 横向分辨率 

分 类 号：O426[理学—声学]