文章摘要
费保蔚,庄天戈,卞正中,程敬之.随机调相连续信号的模糊函数特性及在医学超声成像上的应用前景探讨[J].声学技术,1997,(2):80~82,93
随机调相连续信号的模糊函数特性及在医学超声成像上的应用前景探讨
The ambiguity function properties of continuous random phase-modulated signal and its application in medical ultrasonic imaging[KH*2/3D]
投稿时间:1996-05-21  修订日期:1996-07-15
DOI:
中文关键词: 模糊函数  随机调相  医用超声  成像系统
英文关键词: ambiguity function  phase-modulated  medical ultrasonic  imaging system
基金项目:
作者单位
费保蔚 上海交通大学生物医学工程研究所 200031 
庄天戈 上海交通大学生物医学工程研究所 200031 
卞正中 西安交通大学生物医学工程系 710049 
程敬之 西安交通大学生物医学工程系 710049 
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中文摘要:
      传统的脉冲式医用超声成像系统的模糊函数由于存在周期性的速度模糊和距离模糊,影响了图像的质量和分辨力。本文借鉴噪声雷达理论,证明了随机调相连续波信号具有最优的模糊函数特性,并据此提出了随机调相医用超声成像系统的设计思想。这一思想的提出为克服速度模糊和距离模糊,提高图像质量和分辨力,设计新一代医用超声成像系统提供了理论依据。
英文摘要:
      In traditional pulse medical ultrasonic imaging system, the ambiguity function has periodic distance ambiguity and velocity ambiguity, this affects the image quality and resolution. By using radar theory, this paper has proved that the continuous random phase-modulated signal has the optimum ambiguity function, and has put forward the design ideology of random phase-modulated medical ultrasonic imaging system. This method is the theory basis of overcoming the distance ambiguity and velocity ambiguity, improving the image quality and resolution and designing new generation medical ultrasonic imaging system.
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