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- W2772233823 abstract "The increasing natural or man-made space debris could pose a serious threat to orbital space-based systems and their operators. Consequently, their detection, reorganization, and tracking are of considerable significance. However, the traditional solutions, including ground-based radar and optical telescope, cannot exactly observe the debris with small diameter. Imaging with space-based terahertz (THz) radar in combination with inverse synthetic aperture radar (ISAR) technique enables us to obtain high-resolution 3-D image. In this paper, we have developed a high-resolution THz radar that operates at 340 GHz with a bandwidth of 28.8 GHz and the output peak power of 5 mW for proof-of-concept. In addition, using the characteristic that space debris rotates about its main axis, we have established a 3-D ISAR imaging geometry as well as its corresponding signal model. Then, a 3-D wavenumber-domain image formation algorithm is presented and has been validated by point target simulation. The experimental results have confirmed that the THz radar can effectively achieve high-resolution 3-D imaging of the spinning space debris." @default.
- W2772233823 created "2017-12-22" @default.
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- W2772233823 date "2018-02-01" @default.
- W2772233823 modified "2023-09-24" @default.
- W2772233823 title "Three-Dimensional Imaging of Space Debris With Space-Based Terahertz Radar" @default.
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- W2772233823 doi "https://doi.org/10.1109/jsen.2017.2783367" @default.
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