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- W2897494493 abstract "In this paper, resolution characterization and beam analysis of a 340-GHz imaging radar are demonstrated by means of a point-spread-function (PSF) study by imaging an acoustically levitated point-like target. It is shown that at terahertz frequencies, conventional PSF measurement techniques are limited by the presence of strong scattering response of background objects, such as suspension threads, within the imaging field-of-view (FOV). Using acoustic levitation, it is possible to eliminate secondary objects within the FOV and achieve a pure PSF characterization of the radar. It is shown that the PSF patterns obtained using acoustic levitation exhibit high fidelity and are free from artifacts. We demonstrate this using a small water droplet suspended in air at the focus of the 340-GHz radar. The measured PSF characteristics of the radar are in excellent agreement with physical optics (PO) simulations and analytical results." @default.
- W2897494493 created "2018-10-26" @default.
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- W2897494493 date "2019-01-01" @default.
- W2897494493 modified "2023-10-16" @default.
- W2897494493 title "Point-Spread-Function (PSF) Characterization of a 340-GHz Imaging Radar Using Acoustic Levitation" @default.
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- W2897494493 doi "https://doi.org/10.1109/tthz.2018.2876418" @default.
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