Aj. Weiss et B. Friedlander, STEERING VECTOR AND SIGNAL ESTIMATION FOR UNCALIBRATED POLARIZATION-SENSITIVE ARRAYS, Digital signal processing, 6(1), 1996, pp. 37-50
We consider the problem of estimating the steering vectors of an uncal
ibrated diversely polarized array. The array elements are assumed to c
onsist of several groups. In each group the elements have the same pol
arization sensitivity and the same unknown gain pattern, up to an unkn
own multiplicative factor. The phases of the elements are arbitrary an
d unknown. We identify a cost function whose minimizer is a statistica
lly consistent and efficient estimate of the unknown parameters. An it
erative algorithm for finding the minimum of that cost function is pre
sented. The proposed algorithm is guaranteed to converge. The estimate
d steering vectors are used for constructing a matrix whose multiplica
tion with the observed data yields an estimate of each of the signals.
A comparison of Monte Carlo experiments and theoretical bounds is use
d to validate the analysis. (C) 1996 Academic Press, Inc.