Space-Based Sub-THz ISAR for Space Situational Awareness—Concept and Design
نویسندگان
چکیده
The concept of sub-terahertz (sub-THz) imaging and recognition space objects by a satellite-based inverse synthetic aperture radar (ISAR) is proposed analyzed in this article. Operation at sub-THz frequencies the band 200–400 GHz benefits from wide available bandwidth, high sensitivity to surface texture, very small target features, requires an antenna physical size. A feasibility study presented based on use case scenarios relative motion monitoring satellite observed objects. Expected resolutions, power budget, oscillator stability requirements frequency are discussed. Image formation methods evaluated with simulations. simple electromagnetic modeling capability create comprehensive dataset ISAR images, orientation aspect angles seen sensors, which can be used train semantic classifiers.
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ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 2022
ISSN: ['1557-9603', '0018-9251', '2371-9877']
DOI: https://doi.org/10.1109/taes.2021.3126375