CAJ | 학술논문

解释和分析了二维信号可分离度的概念。基于二维模态分解理论和二维信号解析相位理论提出了二维模态信号的加性可分离度计算式和乘性可分离度计算式，并分别利用完全加性信号和完全乘性信号对两种计算式的实际效果进行了验证。二维经验模态可分离度的应用意义体现在：它可以鉴定二维模态分解算法分解质量的优劣，可以用来确定模态分解客观分解终止条件，还可以在进行单方向特征信息提取时为预处理方法的选择提供有效依据。
해석화분석료이유신호가분리도적개념。기우이유모태분해이론화이유신호해석상위이론제출료이유모태신호적가성가분리도계산식화승성가분리도계산식，병분별이용완전가성신호화완전승성신호대량충계산식적실제효과진행료험증。이유경험모태가분리도적응용의의체현재：타가이감정이유모태분해산법분해질량적우렬，가이용래학정모태분해객관분해종지조건，환가이재진행단방향특정신식제취시위예처리방법적선택제공유효의거。
The concept of bidimensional signal detachable degree is explained and analyzed .Based on the Bidimensional Em-pirical Mode Decomposition (BEMD )theory and the bidimensional signal analytic phase theory ,this paper brought out add and prod-uct detachable degree calculation formulas for bidimensional empirical mode signal .To verify these two formulas′actual effects ,we performed experiments with complete add detachable signal and complete product detachable signal .The application of bidimension-al empirical mode detachable degree shows that it can identify the BEMD algorithm′s quality and has capability to determine the ob-jective BEMD stopping criterion .It also provides an effective basis for the choice of preprocessing methods when extracting single orientation features .