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This paper deals with the problem of estimating the directions of arrival (DOAs) in airborne forward-looking radar imaging, by joint processing the sum and difference channel data. It is known that the monopulse system uses two channels, the sum and the difference, to estimate the target DOA. However, it fails to work when multiple targets are located within the beamwidth. Aiming at this problem,...
A scheme of fast standard Capon beamformer (SCB) is proposed for scanning radar angular superresolution aiming at the computation burden caused by large swath mapping in azimuth. First, using the similar block tridiagonal property between the covariance matrix and Schur complement of its submatrix, the fast matrix inverse works in an improved divide and conquer (D&C) approach by recursively breaking...
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