Title :
An improved MODE algorithm for DOA estimation based on UCA
Author :
Ma, Charglin ; Peng, Yingning ; Tian, Lisheng
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A high resolution DF algorithm which is suitable for a uniform circular array (UCA) is presented. Here the method is constructed by transforming the UCA from element space to mode space and by reformulating the cost function of ML method to a simple form by means of introducing a new concept of noise manifold matrix which plays a very important role in the practical implementation. Compared with ML method this new algorithm is only a close-form solution rather than a multi-variable optimization one which often becomes useless due to heavy computational burden and local minimum traps. Simulation results strongly verify the high performance of this method
Keywords :
array signal processing; direction-of-arrival estimation; matrix algebra; maximum likelihood estimation; noise; signal resolution; DOA estimation; ML method; MODE algorithm; UCA; close-form solution; cost function; high resolution DF algorithm; mode space; noise manifold matrix; performance; simulation results; uniform circular array; Computational modeling; Cost function; Covariance matrix; Direction of arrival estimation; Gaussian noise; Optimization methods; Phased arrays; Transmission line matrix methods; Vectors; White noise;
Conference_Titel :
TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications., Proceedings of IEEE
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-4365-4
DOI :
10.1109/TENCON.1997.648547
