Maximumlikelihood determination of the angular coordinates of radiation sources using a planar equidistant antenna array
Abstract
The maximumlikelihood (ML) method is used to determine the angular coordinates of a certain number (K) of monochromatic signals according to a single sample of observations from the outputs of a planar equidistant array. The solution of the problem involves the determination of the roots of two polynomials of degree K, defining the ML estimates of the directing cosines. The ML estimates of the coefficient vectors of these polynomials are determined by eigenvectors corresponding to mimimum eigenvalues of two Hermitian matrices whose elements are known functions of sufficient statistics in the problem considered.
 Publication:

Radioehlektronika
 Pub Date:
 January 1988
 Bibcode:
 1988Radel..31....6K
 Keywords:

 Antenna Arrays;
 Coordinates;
 Maximum Likelihood Estimates;
 Radiation Sources;
 Radio Direction Finders;
 Eigenvalues;
 Monochromatic Radiation;
 Planar Structures;
 Polynomials;
 Signal Analysis;
 Communications and Radar