Title :
Joint time delay and frequency estimation via state-space realization
Author :
Wu, Y. ; So, H.C. ; Ching, P.C.
Author_Institution :
Lab. for Radar Signal Process., Xidian Univ., Xian, China
Abstract :
By applying a two-dimensional parameter estimation method proposed by M. Viberg and P. Stoica (see Conf. Rec. 32nd Asilomar Conf. Signals, Systems, Computers, vol.2, p.735-9, 1998), we develop a subspace method for estimating the differential delay of a sinusoidal signal received at two separated sensors as well as the sinusoidal frequencies. Using state-space realization, the time delay and frequency estimates are obtained from the state transition and observation matrices. Performance evaluation via computer simulations is included to demonstrate the effectiveness of the proposed algorithm.
Keywords :
array signal processing; delay estimation; frequency estimation; matrix algebra; state-space methods; differential delay; frequency estimation; separated sensors; sinusoidal signal; state observation matrices; state transition matrices; state-space realization; time delay estimation; two-dimensional parameter estimation method; Delay effects; Delay estimation; Eigenvalues and eigenfunctions; Frequency estimation; Frequency shift keying; Microphone arrays; Multiaccess communication; Parameter estimation; Signal processing algorithms; State estimation;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.817854
