也论最大熵谱估计中振幅谱的求取

DETERMINATION OF AMPLITUDE SPECTRUM BY MAXIMUM ENTROPY ESTIMATION

清华大学

本文提出了一种与文献[1]不同的求取最大熵谱估计(MEM)振幅值的方法,即根据MEM与最大似然谱估计(MLM)之间的关系求取MEM,取倒数求和,再取倒数则得功率谱。仿真结果表明,这种方法简单实用。

An approach to determine the amplitude using MEM, which is different from that described in REFERENCE [1] Is presented in the paper. Is is based on the interrelation between MEM (MAXIMUM ENTROPY METHOD) and Maximum Likelihood Estimation (usually is abbreviated to MLM) for determining MEM at all stages and then pick the reciprocal and do the picking again thus the power spectrum is obtained. Simulation test result shows it is easily-operated and works well.