摘要
本文介绍以IBM—PC/XT机为基础的离线自回归谱分析系统,给出该系统对多普勒血流信号处理所获得的动态功率谱。实验结果表明,该系统对血流信号的处理结果,与FFT系统的处理结果相比,具有分辨率高、方差小等优点。
In this paper, the off-line autorgressive spectrum analysis system developed on IBM-PC/XT computer is described, and the processing results are siven by using the system. The experiments show that AR spectrum has advantages, such as high resolution and small root mean square deviation compared with FFT spectrum.
出处
《陕西师大学报（自然科学版）》
CSCD
1989年第1期27-31,共5页
Journal of Shaanxi Normal University(Natural Science Edition)
基金
国家自然科学基金
关键词
超声多普勒
自回归模型
血流信号
ultrasound doppler
autoregressive model
spectrum estimation
dynamic power spectrum.
