27 November 2002 High-Resolution Direction Finding and Scan-Free Spectrum Estimation with Rotational-Shear Interferometric Sensor Arrays
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Abstract
In this paper we investigate the application of a rotational-shear interferometer, toward the problem of simultaneously estimating the directions of well-localized sources, and their spectral profiles. Rotational shear makes possible the acquisition of a spectrum estimate, without the mechanical scan required in using a Michelson interferometer in Fourier-transform spectroscopy. The spectrum and angle estimates are obtained computationally. The interferometric data enables the application of super-resolution direction-finding techniques commonly used in radar and sonar array processing.
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Shawn Kraut, Jason Richard Gallicchio, David J. Brady, "High-Resolution Direction Finding and Scan-Free Spectrum Estimation with Rotational-Shear Interferometric Sensor Arrays", Proc. SPIE 4789, Algorithms and Systems for Optical Information Processing VI, (27 November 2002); doi: 10.1117/12.459013; https://doi.org/10.1117/12.459013
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