TY - JOUR
T1 - Comparison of signal estimation using calibrated and uncalibrated arrays
AU - Weiss, Anthony J.
AU - Friedlander, Benjamin
N1 - Funding Information:
This work was supported by the United States Army Research Office under Contract DAAL03-91-C-0022, sponsored by U.S. Army Communications Electronics Command, Center for Signals Warfare.
PY - 1997
Y1 - 1997
N2 - We consider the problem ot separating and estimating the waveforms of superimposed signals received by an array of sensors. If the array is well calibrated it is possible to first estimate the directions of arrival (DOA) of the signals and then use this information to separate the signals. When the array is not calibrated, but the array elements have the same unknown gain pattern, up to an unknown multiplicative factor and the phases of the elements are arbitrary and unknown, it is possible to estimate the array steering vectors and then use this information for signal estimation. We compare the quality of the estimated signals in the calibrated case with the quality of the estimated signals in the uncalibrated case, in terms of the output signal-to-interference ratio (SIRO) and output signal-to-noise ratio (SNRO).
AB - We consider the problem ot separating and estimating the waveforms of superimposed signals received by an array of sensors. If the array is well calibrated it is possible to first estimate the directions of arrival (DOA) of the signals and then use this information to separate the signals. When the array is not calibrated, but the array elements have the same unknown gain pattern, up to an unknown multiplicative factor and the phases of the elements are arbitrary and unknown, it is possible to estimate the array steering vectors and then use this information for signal estimation. We compare the quality of the estimated signals in the calibrated case with the quality of the estimated signals in the uncalibrated case, in terms of the output signal-to-interference ratio (SIRO) and output signal-to-noise ratio (SNRO).
UR - http://www.scopus.com/inward/record.url?scp=0030783994&partnerID=8YFLogxK
U2 - 10.1109/7.570756
DO - 10.1109/7.570756
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AN - SCOPUS:0030783994
SN - 0018-9251
VL - 33
SP - 241
EP - 249
JO - IEEE Transactions on Aerospace and Electronic Systems
JF - IEEE Transactions on Aerospace and Electronic Systems
IS - 1
ER -