Direction finding for diversely polarized signals using polynomial rooting

A direction finding algorithm for diversely polarized arrays that is based on polynomial rooting is presented. Using polynomial rooting instead of search reduces significantly the computational requirements of the algorithm and enhances resolution. The basic method is limited to linear uniformly spaced arrays. However, using an interpolation technique, the algorithm is extended to a larger class of arrays. The performance of the proposed algorithm is analyzed. Computer simulations are used to demonstrate the performance of the new technique and to verify the performance analysis. >

[1]  T. P. Bronez.  Sector interpolation of non-uniform arrays for efficient high resolution bearing estimation , 1988, ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing.

[2]  Arthur Jay Barabell,et al.  Improving the resolution performance of eigenstructure-based direction-finding algorithms , 1983, ICASSP.

[3]  B. A. D. H. Brandwood.  A complex gradient operator and its applica-tion in adaptive array theory , 1983 .

[4]  Anthony J. Weiss,et al.  Performance analysis of spatial smoothing with interpolated arrays , 1993, IEEE Trans. Signal Process..

[5]  L. Withers.  Piecewise Root-MUSIC , 1991, [Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing.

[6]  T. Parks,et al.  Direction finding with an array of antennas having diverse polarizations , 1983 .

[7]  M. Wax,et al.  Maximum likelihood localization of diversely polarized sources by simulated annealing , 1990 .

[8]  Bhaskar D. Rao,et al.  Performance analysis of Root-Music , 1989, IEEE Trans. Acoust. Speech Signal Process..

[9]  Anthony J. Weiss,et al.  Performance analysis of diversely polarized antenna arrays , 1991, IEEE Trans. Signal Process..

[10]  Petre Stoica,et al.  On spectral and root forms of sinusoidal frequency estimators , 1991, Signal Process..

[11]  Benjamin Friedlander,et al.  Analysis of the asymptotic relative efficiency of the MUSIC algorithm , 1988, IEEE Trans. Acoust. Speech Signal Process..

[12]  Benjamin Friedlander,et al.  The root-MUSIC algorithm for direction finding with interpolated arrays , 1993, Signal Process..

[13]  R. O. Schmidt,et al.  Multiple emitter location and signal Parameter estimation , 1986 .

[14]  Benjamin Friedlander,et al.  Performance of diversely polarized antenna arrays for correlated signals , 1992 .