提出了一种对超声散射信号分析的新方法———子波分解 (WD)倒谱法 ,并利用该方法对正常猪肝组织的回波信号进行了分析 ,对软组织中散射子的平均间距进行了估计 ,与用AR倒谱法所得结果进行了比较 ,结果表明 :WD倒谱比AR倒谱更能反映软组织的微观结构特征 ,说明WD倒谱是软组织超声散射信号分析与软组织散射子平均间距定征的一种有效方法 A new method for the analysis of ultrasonic scattering signal was proposed, that is, the wavelet decomposition (WD) cepstrum method. The echo signal of normal porcine liver tissue was analyzed by this method. The average distance between the scattered particles in soft tissue The results are compared with those obtained by AR cepstral method. The results show that the WD cepstrum can better reflect the microstructure characteristics of soft tissue than the AR cepstrum, which shows that the WD cepstrum is the average of soft tissue ultrasound scattering signal analysis and soft tissue scattering sub-population An effective way to characterize the distance