David Madsen

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The Artemis microASAR is a flexible, robust SAR system built on the successful legacy of the BYU μSAR [1] [2] and other BYU SAR systems [3]. It is an LFM-CW SAR system designed for low-power operation on small, manned aircraft or UAVs. This paper describes the high-level methodology used in designing the microASAR system and contains a description of the(More)
BACKGROUND Triple-reassortant (tr) viruses of human, avian, and swine origin, including H1N1, H1N2, and H3N2 subtypes, emerged in North American swine herds in 1998 and have become predominant. While sporadic human infections with classical influenza A (H1N1) and with tr-swine influenza viruses have been reported, relatively few have been documented in(More)
Interferometry and coherent change detection (CCD) utilize phase differences between complex SAR images to find terrain height and to detect small changes between images, respectively. A new method for improving interferometry and CCD using multiple sub-apertures is proposed. Using backprojection processing, multiple sub-aperture images are created for a(More)
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