Time-domain estimation of the center frequency and spread of Doppler spectra in diagnostic ultrasound

Kristoffersen K.

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Time-domain estimation of the center frequency and spread of Doppler spectra in diagnostic ultrasound

机译：诊断超声中多普勒频谱中心频率和扩展的时域估计

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Two sets of estimators of the center frequency and mean square bandwidth of a Doppler spectrum are analyzed. The first set is based on a linear combination of the complex autocorrelation of the Doppler signal for different lags. It is shown that the argument (phase angle) of the complex autocorrelation function at unit sample lag is a close approximation to the mean Doppler shift, whereas its modulus (magnitude) gives information about the mean square bandwidth of the spectrum. Approximate expressions for the bias and variance of the estimators are derived, valid for long averaging times. The performances of the estimators are compared for signals with rectangular spectra and different signal-to-noise ratios.

机译：分析了多普勒频谱的中心频率和均方带宽的两组估计器。第一组基于针对不同滞后的多普勒信号的复杂自相关的线性组合。结果表明，单位样本滞后下的复自相关函数的自变量（相位角）非常接近均值多普勒频移，而其模量（幅值）给出了有关频谱均方带宽的信息。得出了估计量的偏差和方差的近似表达式，适用于较长的平均时间。比较具有矩形频谱和不同信噪比的信号的估计器性能。

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《IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control》 |1988年第4期|P.484-497|共14页
作者
Kristoffersen K.;
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正文语种 eng
中图分类声学工程;
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1. Time-domain estimation of the center frequency and spread of Doppler spectra in diagnostic ultrasound [J] . Kristoffersen K. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control . 1988,第6期

机译：诊断超声中多普勒频谱中心频率和扩展的时域估计
2. Performance of short-time spectral parametric methods for reducing the variance of the Doppler ultrasound mean instantaneous frequency estimation. [J] . Sava H, Durand LG, Cloutier G Medical and Biological Engineering and Computing: Journal of the International Federation for Medical and Biological Engineering . 1999,第3期

机译：减少频谱多普勒超声的瞬时频谱参数方法的性能意味着瞬时频率估计。
3. In-vitro comparison of time-domain, frequency-domain and wavelet ultrasound parameters in diagnostics of cartilage degeneration. [J] . Kaleva E, Saarakkala S, Toyras J, Ultrasound in Medicine and Biology . 2008,第1期

机译：体外时域，频域和小波超声参数在软骨变性诊断中的比较。
4. Mean frequency estimation of narrowband signals and its applicaton to doppler ultrasound blood velocity waveform estimation [C] . Fernando, K.L., Mathews, . 2002

机译：窄带信号的平均频率估计及其在多普勒超声血流波形估计中的应用
5. High-frequency ultrasound imaging system with Doppler features for biomedical applications using 30∼35 MHz linear arrays and an analog beamformer [D] . Xu, Xiaochen 2007

机译：具有多普勒功能的高频超声成像系统，用于生物医学应用，使用30〜35 MHz线性阵列和模拟波束形成器
6. Time-Frequency Spectral Signature of Limb Movements and Height Estimation Using Micro-Doppler Millimeter-Wave Radar [O] . Yael Balal, Nezah Balal, Yair Richter, 2020

机译：使用微多普勒毫米波雷达的肢体运动和高度估计的时频光谱特征
7. Robust Doppler Spread Estimation in the Presence of a Residual Carrier Frequency Offset [O] . Mehrez Souden, Sofiène Affes, Jacob Benesty, 2013

机译：存在残留载波频率偏移时的鲁棒多普勒扩展估计
8. 1. Time-Domain Computation of Mean and Variance of Doppler Spectra. 2. Estimation of the Contribution of Attenuation to the Ratio of 10to 3CM Powers. [R] . srivastava, r. c. jameson, a. r. 1978

机译：1.多普勒频谱均值和方差的时域计算。 2.估算衰减对10至3Cm功率比的贡献。

Time-domain estimation of the center frequency and spread of Doppler spectra in diagnostic ultrasound

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