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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Displacement vector measurement using instantaneous ultrasound signal phase multidimensional autocorrelation and doppler methods
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Displacement vector measurement using instantaneous ultrasound signal phase multidimensional autocorrelation and doppler methods

机译：使用瞬时超声信号相位多维自相关和多普勒方法进行位移矢量测量

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摘要

Two new methods of measuring a multidimensional displacement vector using an instantaneous ultrasound signal phase are described, i.e., the multidimensional autocorrelation method (MAM) and multidimensional Doppler method (MDM). A high measurement accuracy is achieved by combining either method with the lateral Gaussian envelope cosine modulation method (LGECMM) or multidirectional synthetic aperture method (MDSAM). Measurement accuracy is evaluated using simulated noisy echo data. Both methods yield accurate measurements comparable to that of our previously developed cross-spectrum phase gradient method (MCSPGM); however, they require less computational time (the order, MDM < MAM ap MCSPGM) and would provide realtime measurements. Moreover, comparisons of LGECMM and MDSAM performed by geometrical evaluations clarifies that LGECMM has potentials to yield more accurate measurements with less computational time. Both MAM and MDM can be applied to the measurement of tissue strain, blood flow, sonar data, and other target motions.
机译：描述了使用瞬时超声信号相位测量多维位移矢量的两种新方法，即多维自相关方法（MAM）和多维多普勒方法（MDM）。通过将两种方法与横向高斯包络余弦调制方法（LGECMM）或多向合成孔径方法（MDSAM）结合使用，可以实现较高的测量精度。使用模拟的噪声回波数据评估测量精度。两种方法都能产生与我们先前开发的交叉光谱相位梯度法（MCSPGM）相当的准确测量结果。但是，它们需要较少的计算时间（顺序，MDM

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