Maximum likelihood estimation for array processing in colored noise
Date of Original Version
irection of arrival estimation of multiple sources, using a uniform linear array, in noise with unknown covariance is considered. The noise is modeled as a spatial autoregressive process with unknown parameters. Both stochastic and deterministic signal models are considered. For the random signal case, an approximate maximum likelihood estimator of the signal and noise parameters is derived. It requires numerical maximization of a compressed likelihood function over the unknown arrival angles. Analytical expressions for the MLE's of the signal covariance and the AR parameters are given. Similar results for the case of deterministic signals are also presented. © 1996 IEEE.
IEEE Transactions on Signal Processing
Nagesha, Venkatesh, and Steven Kay. "Maximum likelihood estimation for array processing in colored noise." IEEE Transactions on Signal Processing 44, 2 (1996): 169-180. doi:10.1109/78.485914.