A sequential maximum-likelihood multiple source tracker and the relation of phase-locked loop theory to eigenstructure methods
Rodney Lynn Kirlin · 2003
A phase-lock-type bearing solution is derived from maximum-likelihood considerations, and the effects of other sources in the equivalent bandwidth are shown. This version effectively normalizes input signal power and excludes the need for estimation of the source power. Noise analysis leads to the determination of error variance, probability of detection, and resolution. The derivations shed considerable light on the eigenstructure methodologies. Optimum weights on the noise-space eigenvectors are obtained. Simulations show a significant resolution improvement over MUSIC.>