Phase shift error of dynamic spectrum

摘要：

The phase shift error (PSE) for DS detection is analyzed using frequency domain measure theory of DS. Two factors lead to the difference among different pulse waves, and introduce PSE into DS. Firstly, the period, amplitude and the base line of pulse wave are unstable. Secondly, the phases of pulse waves under different wavelengths are different. The PSE of transmitted and reflected pulse waves are both discussed quantitatively. The results showed that the PSE is correlated with the position of rectangular intercept window that intercepts pulses from the waves. It can be minimized into about 10％ by selecting the start points of the windows. Because of the sensor contact pressure, the shapes of transmitted and reflected pulse waves are different. Thus the right intercept locations are at the start of ascending limb and the dicroticpulse respectively according to minimum PSE rule.

关键词： Dynamic spectrum photo-electric pulse wave error analysis

作者: Yan Wang Ling Lin Yong Ma Gang Li Rui-li Zeng

作者单位: aCollege of Electrical & Control Engineering, Liaoning Technical University, Liaoning, Huludao,China State Key Laboratory of Precision Measurement Technology and Instruments,Tianjin University, Tianjin College of Science, Liaoning TechnicalUniversity, Liaoning, Huludao, China, 125105 Department of Automobile Engineering,Academy of Military Transportation, Tianjin 300161

会议类型: 国际会议

会议名称: 第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology

会议地点: 沈阳

会议语种:英文

页码: 1-6

在线出版日期: 2008-09-15（万方平台首次上网日期，不代表论文的发表时间）