Cyclic Cross-correlation based Two-dimensional DOA Estimation Approach
Huanzhang Lu · Signal Processing · 2009
Many man-made modulated signals exhibit cyclostationarity,corresponding to the underlying periodicity arising from carrier frequencies or baud rates.In this paper,we propose a new two-dimensional direction-of-arrival estimation algorithm using simplified array configuration that exploits cyclostationarity in order to improve the direction-of-arrival estimation.The proposed method not only inherits the advantages of the cyclic DOA estimation methods in spatial spectral estimation,but also has better noises suppressing ability. This method can be applied to both wideband and narrowband cases without any two-dimensional search and that the two-dimensional parameters can be paired automatically.Theoretical analysis and computer simulation show simultaneously that this algorithm has better performance in noises suppressing and signal selectivity.