Results 31 to 40 of about 1,794 (207)
Three-Dimensional Imaging of Terahertz Circular SAR with Sparse Linear Array
Sensors, 2018 Due to the non-contact detection ability of radar and the harmlessness of terahertz waves to the human body, three-dimensional (3D) imaging using terahertz synthetic aperture radar (SAR) is an efficient method of security detection in public areas.
Jubo Hao, Jin Li, Yiming Pi
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, 2022 3 S.We present a terahertz imaging system for aircraft radome inspection based on a dual-frequency FMCW radar working at center frequencies of 100 and 150 GHz and with 40 and 60 GHz bandwidth, respectively.
Keil, Andreas +8 more
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Synthetic Aperture Terahertz Imaging with an Optoelectronic FMCW Radar
, 2023 265268We demonstrate synthetic aperture terahertz imaging with an optoelectronic system based on continuous-wave lasers. A frequency-swept optical beat signal generates the terahertz field, which is then coherently detected by photomixing.
Keil, Andreas +5 more
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Use of a portable topographic mapping millimetre wave radar at an active lava flow. [PDF]
, 2006 A ground-based millimetre wave radar, AVTIS (All-weather Volcano Topography Imaging Sensor), has been developed for topographic monitoring. The instrument is portable and capable of measurements over ranges up to ∼7 km through cloud and at night.
James, M R +9 more
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A review of terahertz phase modulation from free space to guided wave integrated devices
Nanophotonics, 2021 In the past ten years, terahertz technology has developed rapidly in wireless communications, spectroscopy, and imaging. Various functional devices have been developed, such as filters, absorbers, polarizers, mixers, and modulators.
Zeng Hongxin +11 more
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Quantum Radar-What is it good for?
, 2021 We consider the implications for the practical usefulness of a quantum enhanced radar system in the scenario where it is able to outperform any classical counterpart.
Ankel, Martin +5 more
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Advancements in Research on Micro-motion Feature Extraction in the Terahertz Region
Leida xuebao, 2018 With years of development and accumulation, a considerable amount of research has focused on micro-motion, an important auxiliary feature in radar target detection and recognition. With the recent rise of terahertz, micro-motion feature extraction in the
Yang Qi +3 more
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Extreme Ultra‐Wideband Optoelectronic Frequency‐Modulated Continuous‐Wave Terahertz Radar
, 2023 A novel photonic terahertz measurement system based on a frequency-modulated continuous-wave (FMCW) radar approach is presented. In previous works, fast frequency modulation has been demonstrated in connection with a continuous wave terahertz ...
Keil, Andreas +19 more
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Terahertz Metasurfaces: Toward Multifunctional and Programmable Wave Manipulation
Frontiers in Physics, 2020 Metasurfaces, composed of prearranged artificial unit cells possessing different electromagnetic (EM) responses, provide unprecedented abilities to realize versatile wave manipulations.
Han Wei Tian +5 more
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Terahertz technologies for non destructive testing
, 2023 2932Inline measurement systems in the terahertz range offer the potential to become an important part of quality assurance in the longer term. Despite the undisputed advantages in terms of contrast, sensitivity, measurement speed and resolution, there is
Chartier, Sébastien +5 more
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