中文

Journal of Applied Sciences ›› 2012, Vol. 30 ›› Issue (2): 146-150.doi: 10.3969/j.issn.0255-8297.2012.02.007

• Signal and Information Processing • Previous Articles     Next Articles

DOA Estimation of Wideband Signals Based on Cyclostationarity

LIU Fu-gang1;2, DIAO Ming1   

  1. 1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
    2. College of Electronic and Information Engineering, Heilongjiang Institute of Science and Technology,
    Harbin 150027, China
  • Received:2011-03-08 Revised:2011-07-23 Online:2012-03-26 Published:2012-03-30

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Abstract:

For direction of arrival (DOA) estimation of cyclostationarity wideband signals, by analyzing the signal’s cyclostationarity and conjugate cyclostationarity properties, a new method of DOA estimation from wideband signal is proposed based on the subspace decomposition method. The new method applies signals’ cyclostationarity and conjugate cyclostationarity information to form an extended cyclic correlation matrix.The spatial spectrum of wideband signal is obtained. The method has good performance of the cyclic MUSIC algorithm, and does not require optimal lag time to process the wideband signals. Computer simulations are conducted to show good performance in signal selective direction finding, with high resolution and interference suppression capability.

Key words: array signal processing, DOA estimation of wideband signals, cyclostationarity, conjugate cyclostationarity

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