期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
合成带宽雷达缺失采样条件下的高分辨距离像获取
1
作者 张杨 胡杨 田斌 《现代雷达》 CSCD 北大核心 2018年第3期43-45,57,共4页
提出了一种新的用于合成带宽雷达高分辨成像的方法,该方法用于频域样本缺失的条件下。这种新方法通过有效采样对,估计信号的自协方差函数(ACF);通过构造自相关阵,用多重信号分类的算法获取散射点的距离和散射强度。即使数据的很... 提出了一种新的用于合成带宽雷达高分辨成像的方法,该方法用于频域样本缺失的条件下。这种新方法通过有效采样对,估计信号的自协方差函数(ACF);通过构造自相关阵,用多重信号分类的算法获取散射点的距离和散射强度。即使数据的很大一部分缺失,该方法仍然能够很好地恢复距离像。仿真结果表明:该方法优于传统的补零和稀疏恢复方法。 展开更多
关键词 合成带宽雷达 高分辨成像方法
下载PDF
Optical coherence tomography and Doppler optical coherence tomography in the gastrointestinal tract 被引量:8
2
作者 Eugen Osiac Adrian Sǎftoiu +2 位作者 Dan Ionut Gheonea Ion Mandrila Radu Angelescu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第1期15-20,共6页
Optical coherence tomography(OCT) is a noninvasive,high-resolution,high-potential imaging method that has recently been introduced into medical investigations.A growing number of studies have used this technique in th... Optical coherence tomography(OCT) is a noninvasive,high-resolution,high-potential imaging method that has recently been introduced into medical investigations.A growing number of studies have used this technique in the field of gastroenterology in order to assist classical analyses.Lately,3D-imaging and Doppler capabilities have been developed in different configurations,which make this type of investigation more attractive.This paper reviews the principles and characteristics of OCT and Doppler-OCT in connection with analyses of the detection of normal and pathological structures,and with the possibility to investigate angiogenesis in the gastrointestinal tract. 展开更多
关键词 Optical coherence tomography DOPPLER Gastrointestinal tract Gastrointestinal cancer ANGIOGENESIS
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部