Comparison of signal estimation using calibrated and uncalibrated arrays

Anthony J. Weiss, Benjamin Friedlander

Research output: Contribution to journalArticlepeer-review

Abstract

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).

Original languageEnglish
Pages (from-to)241-249
Number of pages9
JournalIEEE Transactions on Aerospace and Electronic Systems
Volume33
Issue number1
DOIs
StatePublished - 1997
Externally publishedYes

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