后向散射超声脉冲的最优中心频率估计

IEEE Transactions on Sonics and Ultrasonics Pub Date : 1985-11-01 DOI:10.1109/T-SU.1985.31669

R. K. Bahr, J. Bucklew, S. Flax

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引用次数: 8

摘要

摘要:考虑了超声信号中心频率估计精度的边界。特别地，计算了任意无偏估计的方差的Cramer-Rao下界。然后将这个下界与一个简单的计数零方法进行比较。最后给出了一个典型超声参数的应用实例。结果表明，这种易于计算的估计器具有惊人的性能。

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Optimal Center-Frequency Estimation for Back-Scattered Ultrasound Pulses

Absfmcf-Bounds on the accuracy of estimates of the center frequency of an ultrasound signal are considered. In particular the Cramer-Rao lower bound to the variance of any unbiased estimatnr is calculated. This lower bound is then compared with a simple zero-counting method. An example utilizing typical ultrasound parameters is worked. It is shown that this easily computable estimator performs surprisingly well.

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IEEE Transactions on Sonics and Ultrasonics

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