Results 31 to 40 of about 677,067 (160)
Micro-Doppler Feature Extraction of Rotating Structures of Aircraft Targets with Terahertz Radar
Remote Sensing, 2022 The micro-Doppler features formed by the micro-motion of rotating blades of rotors and turbines are of great significance for aircraft target detection and recognition.
Xiaoyu Qin, Bin Deng, Hongqiang Wang
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SOLID-STATE COMPONENTS AND DEVICES OF TERAHERTZ ELECTRONIC TECHNOLOGY IN UKRAINE [PDF]
Радиофизика и электроника, 2018 Subject and purpose. One of the main problems arising in the implementation of the terahertz range is associated with the need to provide the advanced equipment developed in this frequency band with effective electronic components.
N. F. Karushkin
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Research on Direct Detection Method and Performance of Single-photon Counting Terahertz Radar
Leida xuebaoThe conventional terahertz radar suffers from limited operation range for long-distance, noncooperative target detection due to the low transmitter power and atmospheric attenuation effect, both of which pose a hindrance in meeting the requirements of ...
Kang LIU +4 more
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Fast and High-Quality 3-D Terahertz Super-Resolution Imaging Using Lightweight SR-CNN
Remote Sensing, 2021 High-quality three-dimensional (3-D) radar imaging is one of the challenging problems in radar imaging enhancement. The existing sparsity regularizations are limited to the heavy computational burden and time-consuming iteration operation.
Lei Fan +4 more
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Compressed Sensing for THz FMCW Radar 3D Imaging
Complexity, 2021 A terahertz (THz) frequency-modulated continuous wave (FMCW) imaging radar system is developed for high-resolution 3D imaging recently. Aiming at the problems of long data acquisition periods and large sample sizes for the developed imaging system, an ...
Shanshan Gu +6 more
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Sensors, 2022 Maneuvering target imaging based on inverse synthetic aperture radar (ISAR) imaging has recently drawn significant attention. Among the many autofocusing technologies which are crucial in ISAR imaging, minimum-entropy-based autofocusing (MEA) is highly ...
Hetong Wang +3 more
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Hierarchical Physical‐Cyber Encryption via Metasurface‐Encoded Holographic Keys
Advanced Science, EarlyView.ABSTRACT Physical‐layer encryption based on metasurfaces has emerged as a promising alternative to conventional algorithmic cryptography by embedding security into physical processes. However, most existing metasurface‐based encryption schemes operate within single‐stage or static frameworks, where correct physical illumination directly reveals the ...
Zhen Liu +8 more
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Terahertz-ViSAR-based Imaging of Passive Jamming Objects
Leida xuebaoImaging of passive jamming objects has been a hot topic in radar imaging and countermeasures research, which directly affects the detection and recognition capabilities of radar targets.
Lei FAN, Qi YANG, Hongqiang WANG, Jun YI
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Advanced Science, EarlyView.Pattern‐dependent etching is converted into a physical prior for intelligent reconstruction of high‐aspect‐ratio silicon structures. Combining YOLO‐Pose feature extraction with a topography network, the framework retrieves depth, sidewall angle, and scallop texture from minimal destructive observations, enabling accurate cross‐scale metrology and near ...
Shuyan He +4 more
wiley +1 more source
Modeling specifications for HiVision Millimeter Wave Radar for multisensory Enhanced Vision Systems [PDF]
, 2013 A number of projects have been developed to increase flight safety and economy of aviation. The development and validation of systems for pilot assistance is also one field of interest.
Devendran, B +2 more
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