【作者】 孟晓辉； 理华； 王君琳； 王玥；

【Author】 MENG Xiao-hui;LI Hua;WANG Jun-lin;WANG Yue;Institute of Acoustics, CAS;

【机构】 中国科学院声学研究所；

【摘要】 提出一种合成孔径序列波束成形复合成像方法,该方法首先做多角度的合成孔径序列波束形成,再将包络检测后的图像进行复合,得到复合后的图像。用第一旁瓣高度表征对比度,用横向-6 d B宽度表征横向分辨率。对位于10-70 mm深,间隔为10 mm的7个点分别定量分析对比度和横向分辨率,仿真结果表明,合成孔径序列波束形成复合成像方法比单纯的合成孔径序列波束形成方法获得的横向分辨率相似,平均对比度提高1.53 dB。更多还原

【Abstract】 A method for synthetic aperture sequential beamforming compounding(SASBC) is proposed. Radio Frequency(RF) data with multiple angles by synthetic aperture sequential beamforming(SASB) are compounded together. The lateral resolution and contrast resolution are quantized by first sideband height and-6 d B width respectively. A set of scatterers at depths of 10 mm to 70 mm at intervals of 10 mm are used to test the imaging quality. Simulations show a similar average lateral resolution and an average contrast improvement of 1.53 d B are obtained when comparing SASBC images to SASB images without compounding.更多还原