Abstract:

When signal is coherent, the MUSIC(MUltiple SIgnal Classification) canwot estimates the directionofarrival accurately. To conquer this problem,  a new modifyMUSIC algorithmic is put forward. The principle of this new algorithmic is to calculate the cross covariance. Moreover, the new algorithmic has no loss of array aperture. The new algorithmic and the MUSIC algorithmic are simulated, then compare performances of the MUSIC algorithmic to that of the new algorrithmic. the result indicates that the new modifyMUSIC algorithmic is good at estimating the directionofarrival accurately when signals are coherent.

Key words: coherent signals, modify multiple signal classification(MUSIC), direction-of-arrival(DOA) estimation