On a nonparametric detection method for array signal processing in correlated noise fields
Petre Stoica, Kon Max Wong, Qiang Wu · IEEE Transactions on Signal Processing · 1996
The correct derivation of maximization of the likelihood function is presented, and the correct form of information theoretic criteria (ITC) for the determination of the number of signals in an unknown correlated noise field is shown. The possible pitfalls of using ITC under the circumstances are briefly considered.