摘要
针对超声经典合成孔径聚焦(SAFT)算法需对每点进行延迟聚焦、运算量大等问题,提出基于相关性延迟分析的合成孔径聚焦算法,并建立数学模型,采用Matlab分别对经典SAFT算法和基于相关性延迟分析的SAFT算法进行仿真分析。结果表明:基于相关性延迟分析的SAFT算法具有图像质量优、分辨率高、实时性好等特点。
The conventional synthetic aperture focusing （SAFT） needs to be focused point to point, which may consume cause massive calculation. So a new SAFT algorithm based on correlation-delay was proposed. The principle of the new SAFT algorithm was introduced and Matlab simulated programs were used to analyze the two algorithms. The result illustrates that the new SAFT algorithm is more accurate, more efficient with higher lateral resolution.
出处
《中国测试》
CAS
北大核心
2014年第1期62-65,共4页
China Measurement & Test
基金
国家重大科学仪器设备开发专项(2013YQ230575)
关键词
合成孔径聚焦
相关性分析
延迟聚焦
超声成像
synthetic aperture focusing
correlation-delay analysis
delay-focusing
ultrasonicimaging
