谐波数检测的最大特征值变化率准则

本文提出了谐波数检测的最大特征值变化率准则（ＭＥＶＲＣ），与ＡＩＣ和ＭＤＬ不同之处是ＭＥＶ－ＲＣ不利用偏置项，它基于协方差矩阵的最小特征值的变化率来估计信号数目。计算机模拟结果表明，ＭＥＶＲＣ的性能在常规信噪比条件下优于ＡＩＣ，而在小信噪比条件下比ＭＤＬ略好。

Detection of Number of Harmonics by Maximum Eigenvalue Varied Rate Criteria

The maximum eigenvalue varied rate criteria(MEVRC),is presented as a new approach in determining the number of harmonics in a given signal. In contrast to AIC and MDL criteria, MEVRC does not use a bias term.It is based on the eigenvalue varied rate of the smallest eigenvalues to estimate the number of signals. Simulation results indicate that the performance of MEVRC is better than the AIC in normal SNR and sample situations, and better than the MDL in adverse conditions.