Abstract:A method based on the critical eigenvalue is proposed to evaluate the underestimation problem of minimum description length criterion (MDL) source enumeration. The uniqueness of critical eigenvalue has been proved and the solution expression is presented by the analysis on the enumeration algorithm. The critical eigenvalue method can predict the boundary of underestimation for different numbers of undetected sources and access the influences of array parameters on the performance of source enumeration comparing with the existing methods. An approximation method is proposed to reduce the calculation complexity of solving the critical eigenvalues for large numbers of undetected sources and the factors on the approximation errors are also analyzed. Simulation results indicate that the critical eigenvalue method can exactly describe the boundary of underestimation of source enumeration. Similar analysis can be also performed on other source enumeration methods based on information criteria.
杜非,李一博,靳世久,曾周末. 基于临界特征值的MDL信源数欠估计分析方法[J]. 振动与冲击, 2016, 35(21): 113-119.
Du Fei Li Yi-bo Jin Shi-jiu Zeng Zhou-mo. Analysis on the MDL source under-enumeration based on critical eigenvalue method. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(21): 113-119.
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