【摘要】 针对BRATUMASS系统信号分析中存在的问题,从广义函数中弱函数的Hermite基函数分解出发,对信号的频谱幅度按照某种设定门限序列进行划分,提出对信号分解的方法;还从信号谱幅度概率分布的角度,讨论了确定门限序列下限的方法.从给出的实际信号分解和背景下限确定的过程来看,分离能很好地显示同特性组织回波的合成情况,其提取的下限也能很好地逼近实际的组织特性参数值.更多还原

【Abstract】 There are problems that BRATUMASS system signal analysis.Based on weak function of generalized functions in the Hermite basis function decomposition,this paper proposes the method of signal decomposition by the signal spectrum amplitude,according to some set threshold sequence to be.In addition,the method discussed how to determine the sequence of the lower threshold from the probability distribution of the signal amplitude spectrum.The process of determining the lower limit and decomposing the actual signal shows that the separation can be a clearly show the synthesis of the echo characteristics of the organization and the extracted lower limit can be close to the actual value of the characteristic parameters.更多还原