Signal Source Number Estimation Method Based on Singular Value
Hao Zeng · Jisuanji gongcheng · 2009
Signal source number estimation is very important to spatial spectrum estiamtion.Usually,eigenvalues of the received signals covariance matrix are used in some different detection criteria.The proposed algorithm method replaces the eigenvalue by singular value,which can be calculated by the data matrix directly.Since the covariance matrix estimation and eigenvalues calculation are avoided,the new algorithm reduces the computation load and estimation error.The spacial smoothing of data matrix resolves the coherent signals.The mathematical calculations and computer simulation show the validity of the new alogrithm.