苏州市职业大学学报
囌州市職業大學學報
소주시직업대학학보
JOURNAL OF SUZHOU VOCATIONAL UNIVERSITY
2012年
1期
9-14
,共6页
BRATUMASS系统%Hermite基函数%弱函数%母函数
BRATUMASS繫統%Hermite基函數%弱函數%母函數
BRATUMASS계통%Hermite기함수%약함수%모함수
BRATUMASS%Hermite basis function%weak function%generating function
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．
針對BRATUMASS繫統信號分析中存在的問題，從廣義函數中弱函數的Hermite基函數分解齣髮，對信號的頻譜幅度按照某種設定門限序列進行劃分，提齣對信號分解的方法；還從信號譜幅度概率分佈的角度，討論瞭確定門限序列下限的方法．從給齣的實際信號分解和揹景下限確定的過程來看，分離能很好地顯示同特性組織迴波的閤成情況，其提取的下限也能很好地逼近實際的組織特性參數值．
침대BRATUMASS계통신호분석중존재적문제，종엄의함수중약함수적Hermite기함수분해출발，대신호적빈보폭도안조모충설정문한서렬진행화분，제출대신호분해적방법；환종신호보폭도개솔분포적각도，토론료학정문한서렬하한적방법．종급출적실제신호분해화배경하한학정적과정래간，분리능흔호지현시동특성조직회파적합성정황，기제취적하한야능흔호지핍근실제적조직특성삼수치．
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.
