摘要
针对全数字彩色B超仪中正交信号的获取问题 ,在分析现有常用方法特点的基础上 ,提出了一种新的方案。该方案实现电路简单、成本低 ,并且能快速地获取优质的正交信号 ,具有非常好的实用价值。希尔伯特变换是该方案实现的一个重要工具。
For the problem of getting quadrature signal of all digital colorful B-scanner, a new plan was proposed on the base of analyzing the methods on hand and most of those in use. The circuit of this plan was simple and cheap. Moreover, it could fast get high quality quadrature signal and have good practical value. Hilbert transform was an important tool that mades the plan feasible.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
2001年第6期510-515,共6页
Chinese Journal of Biomedical Engineering
关键词
电子聚焦
回波信号
正交信号
通道
希尔伯特变换
Electronic focusing
Echo signal
Quadrature signal
Channel
Hilbert transform
