Title :
A novel high-resolution algorithm for complex-direction search
Author :
Qiu, Robert C. ; Lu, I-Tai
Author_Institution :
Weber Res. Inst., Polytechnic Univ., Farmingdale, NY, USA
Abstract :
The location dependent effect of the acoustic field received by a linear array is modeled as an extra “loss” factor in the complex spectral variable. A high-resolution algorithm combining the singular value decomposition method and the eigen-matrix pencil method is then employed to find the complex directions representing the incoming directions and the location dependent factors of multipath and multimode arrivals. Five key features (namely, noise immunity, robustness, resolution, accuracy, and physical insight) of the proposed algorithm are studied using numerical examples
Keywords :
acoustic field; array signal processing; direction-of-arrival estimation; eigenvalues and eigenfunctions; multipath channels; signal resolution; singular value decomposition; sonar arrays; sonar signal processing; spectral analysis; accuracy; acoustic field; complex spectral variable; complex-direction search; eigen-matrix pencil method; high resolution algorithm; incoming directions; linear array; location dependent effect; location dependent factors; loss factor; multimode arrivals; multipath arrivals; noise immunity; physical insight; robustness; singular value decomposition method; underwater waveguide; Acoustic arrays; Acoustic waveguides; Autoregressive processes; Direction of arrival estimation; Eigenvalues and eigenfunctions; Helium; Laboratories; Noise robustness; Signal resolution; Singular value decomposition;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3192-3
DOI :
10.1109/ICASSP.1996.550554
