The image reconstruction problem of linear attenuation coefficients is very difficult and central in transmission TGS.
在TGS透射测量中，线性衰减系数值的图像重建问题是TGS的难点和核心问题。
This paper describes the measurement procedure of ultrasonic attenuation coefficients and ultrasonic velocity tomography.
本文对超声衰减系数和超声声速断层成像的测量过程进行了描述。
The assumption of equal signal and pump attenuation coefficients is no longer required, while the iteration step-size can be significantly enlarged even under saturated amplification.
该算法不用假设抽运光和信号光衰减系数相同，且可大大增加饱和放大状态下的迭代步长。
If a proper non - linear change of the instantaneous frequency is realized, we can get a frequency spectrum whose input is the mean of the reciprocals of bed attenuation coefficients.
如果把瞬时频率作适当的非线性变化，就可以得到一个以地层衰减率的倒数的平均值为输入的频谱。
If a proper non - linear change of the instantaneous frequency is realized, we can get a frequency spectrum whose input is the mean of the reciprocals of bed attenuation coefficients.
如果把瞬时频率作适当的非线性变化，就可以得到一个以地层衰减率的倒数的平均值为输入的频谱。
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