Fan L, Evans D H
Division of Medical Physics, Faculty of Medicine, Leicester Royal Infirmary, Leicester University, England.
IEEE Trans Biomed Eng. 1994 Apr;41(4):387-90. doi: 10.1109/10.284968.
There is considerable interest in the application of autoregressive (AR) spectral analysis to ultrasonic Doppler signals. Sonograms produced using this technique are, however, very different from those produced using classic Fourier transform methods. Simulations have shown that the heights of the peaks in the AR spectra of narrow-band signals are not necessarily proportional to signal power, and should be used with caution in the context of Doppler signal processing.
自回归（AR）谱分析在超声多普勒信号中的应用引起了广泛关注。然而，使用该技术生成的声谱图与使用经典傅里叶变换方法生成的声谱图有很大不同。模拟表明，窄带信号的AR谱中峰值的高度不一定与信号功率成正比，在多普勒信号处理中应谨慎使用。
