@article{5e7389bd91a448db81c8dcd16d8ef4c3,
title = "Maximum Likelihood Signal Estimation for Polarization Sensitive Arrays",
abstract = "We consider the problem of separating and estimating the waveforms of superimposed signals received by a polarization-sensitive array. Signal estimation is accomplished by a two-step maximum likelihood procedure: (i) The directions of arrival and polarization parameters of all the signals are estimated, (ii) The estimated signal is obtained as a linear combination of the array outputs, with weights which are computed from the estimated direction/polarization parameters. The objective of this paper is to analyze the quality of the estimated signal in terms of the output signal-to-interference ratio (SIR) and output signal-to-noise ratio (SNR). Closed-form expressions are derived for the output SIR and SNR of a general diversely polarized array. By evaluating these expressions for selected test cases it is shown that polarization-sensitive arrays can provide significantly higher output SIR and SNR than uniformly polarized arrays. The performance improvement is especially significant for closely spaced sources with sufficiently different polarization characteristics.",
author = "Weiss, {Anthony J.} and Benjamin Friedlander",
note = "Funding Information: Manuscript received May 11, 1992; revised January 7, 1993. This work was supported by the United States Army Research Office under contract DAAL03-91-C-0022, sponsored by the U.S. Army Communications Electronics Command, Center for Signals Warfare. A. J. Weiss is with the Electrical Engineering Department, Tel-Aviv University, Tel-Aviv, 69978 Israel. B. Friedlander is with the Department of Electrical and Computer Engineering, University of Califomia at Davis, Davis, CA 95616. IEEE Log Number 92 1 1256",
year = "1993",
month = jul,
doi = "10.1109/8.237623",
language = "אנגלית",
volume = "41",
pages = "918--925",
journal = "IEEE Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "7",
}