【摘要】 本文介绍了以IBM-PC/XT机为基础的超声Doppler血流信号自回归(AR)谱分析系统,并给出了该系统的处理结果。实验表明,AR谱估计比FFT谱估计具有分辨率高,随机起伏误差小等优点。更多还原

【Abstract】 In this paper,the off-line frequency spectrum analysis system developed based on IBM—PC/XT computer is described and the processing results are given. Experiments reveals show that AR spectrum estimation has the merits of high resolution and smal random fluctuation etc,compared with FFT periodograms.更多还原