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传统的超声解卷积的方法,是从测量信号中去掉测量系统冲激响应的影响,从而恢复实际回波信号.对于通过解卷恢复非均匀结构软组织深部散射源的散射信号,非均匀声程介质冲激响应的估计就成为关键.笔者从改进的传输模型出发,利用维纳逆滤波方法,逐层估计出组织中非均匀声程介质的冲激响应.计算机模拟实验证明该方法是可行的
The traditional method of ultrasonic deconvolution is to remove the influence of the impulse response of the measurement system from the measurement signal so as to recover the actual echo signal. The estimation of non-uniform acoustic path medium impulse response becomes crucial for the recovery of scattered signals from deep scattering sources of non-uniform structure soft tissue by unwinding. Starting from the improved transmission model, the author estimates the impulse response of the non-uniform acoustic path medium in the tissue layer by layer by using Wiener inverse filtering method. Computer simulation experiments show that this method is feasible