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This letter deals with the problem of fluctuating target detection in heavy-tailed -distributed clutter over a number of independent coherent intervals, e.g., in the case of a long observation interval (“stare mode”), or that of independent (range) resolution cells as per the track before detect techniques. The generalized likelihood ratio test for the problem at hand is derived, as well as an...
This paper proposes a multi-channel adaptive array spatial covariance matrix estimation technique in which the covariance is modeled as consisting of two complementary components. The first component has finite rank and is meant to capture the low-rank components of the external interference environment. The second component has full rank and corresponds to external noise, but is modeled by a low-order...
Recently it has been proposed that two-dimensional (2D) oversampled received arrays could be used to provide signal-to-external noise ratio (SENR) gains for over-the-horizon radar applications which are strongly externally noise limited. These array configurations can be used to exploit superdirective adaptive beamforming techniques. A key element of the superdirective adaptive beamforming process...
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