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In this paper, a source number estimator using the peak-to-average power ratio modified by Gerschgorin radii is proposed. The eigenvectors of the sample covariance matrix are first employed to calculate the peak-to-average power ratio, and then a Gerschgorin transform is taken to the sample covariance matrix, next the new peak-to-average power ratio values modified by Gerschgorin radii are introduced...
In array signal process field, Eigen Increment Threshold (EIT) was widely adopted for its better performance of number-detection than traditional AIC and MDL method. However, EIT has to face the challenge of detection probability (PD) descending while the power of sources is quite different. In this paper, after some analysis to the variety of the eigenvalue of auto-correlation matrix, a modification...
AIC method shows good performance in low SNR but gives over-estimation for target number, while MDL can obtain consistent estimation in high SNR but shows bad performance in low SNR. In this paper, a new method for detecting the source number is proposed to take a good compromise between the AIC and the MDL, which bases on Gerschgorinpsilas disk theorem and information theoretic criterion. The method...
In the array signal process field, to estimate the direction of arrival (DOA) of sources, it is a key problem to estimate the number of signal source correctly. Luo Jingqing proposed a set of eigenvalue gradient methods (EGMs), which showed better performances of number-detection than traditional AIC and MDL method. However, EGMs doesn't take the false-alarm probability (PFA) into account, which causes...
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