Results 41 to 50 of about 1,794 (207)

Micro-Doppler Feature Extraction of Rotating Structures of Aircraft Targets with Terahertz Radar

open access: yesRemote 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
doaj   +1 more source

Terahertz for Radar applications and Wireless Communication

open access: yesCoRR
Technological advancements in the design of electronic and optical materials have opened up the possibility of utilizing the latest available Radio Frequency spectrum the Terahertz (THz) band. This band holds great promise for next-generation wireless systems, which are poised to seamlessly integrate a wide array of data-intensive and time-sensitive ...
Sofiane Latreche   +2 more
openaire   +2 more sources

SOLID-STATE COMPONENTS AND DEVICES OF TERAHERTZ ELECTRONIC TECHNOLOGY IN UKRAINE [PDF]

open access: yesРадиофизика 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
doaj   +1 more source

Fast and High-Quality 3-D Terahertz Super-Resolution Imaging Using Lightweight SR-CNN

open access: yesRemote 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
doaj   +1 more source

Compressed Sensing for THz FMCW Radar 3D Imaging

open access: yesComplexity, 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
doaj   +1 more source

Autofocusing of Maneuvering Targets in Terahertz Inverse Synthetic Aperture Radar Imaging Based on Damped Newton Method

open access: yesSensors, 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
doaj   +1 more source

Shadow‐Free Back‐Contact Perovskite Thin‐Film Detectors for Direct Extreme‐Ultraviolet and Soft X‐Ray Sensing

open access: yesAdvanced Materials Interfaces, EarlyView.
A triple‐cation perovskite detector with a quasi‐interdigitated back‐contact architecture enables highly sensitive and linear EUV/soft x‐ray detection by minimizing electrode shadowing and enhancing charge extraction. Efficient interfacial carrier collection and rapid temporal response highlight the potential of back‐contact‐engineered perovskites for ...
Jingying Liu   +5 more
wiley   +1 more source

Modeling specifications for HiVision Millimeter Wave Radar for multisensory Enhanced Vision Systems [PDF]

open access: yes, 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
core  

Terahertz-ViSAR-based Imaging of Passive Jamming Objects

open access: yesLeida xuebao
Imaging 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
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

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