研制以超声波为载体的电路系统，探测眼部血流多普勒信号，并进行频谱分析。
A set of circuits for detecting ophthalmic blood flow Doppler signals was developed and spectral analysis was realized as well.
结果：前列腺癌周边血流丰富，彩色血流信号呈花环状或点棒状，多普勒频谱测值为高阻力指数特征。
Results:The blood flow was abundant around the cancer tissue. The color signal of blood flow showed garland-like or punctate. The feature of its Doppler spectrum was o…
分析了存在距离-速度同步拖引干扰时的信号频谱特征，研究了一种脉冲多普勒（PD）雷达抗距离-速度同步拖引干扰的方法。
The spectrum characteristics of synchronous jamming on range and velocity are analyzed. A method for a PD radar to counter the jamming is also discussed.
结果通过血流多普勒信号的小波尺度图研究科室，发现利用小波尺度图可以眼科提高血流多普勒信号低频段的频谱分辨率。
Result Wavelet scalogram of blood flow ultrasonic signal had a higher distinguishability than STFT spectrogram in the low frequency portion, but had poorer decussation terms than spectrogram.
彩色多普勒显示病变区呈蓝红相间的彩色血流信号，脉冲多普勒显示连续带状门脉血流频谱。
Pulsed Doppler spectra showed image of smooth continuous bands in the honeycomb or snaky black areas.
彩色多普勒显示病变区呈蓝红相间的彩色血流信号，脉冲多普勒显示连续带状门脉血流频谱。
Pulsed Doppler spectra showed image of smooth continuous bands in the honeycomb or snaky black areas.
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