Results 21 to 30 of about 532,604 (268)

Denoising and Feature Extraction for Space Infrared Dim Target Recognition Utilizing Optimal VMD and Dual-Band Thermometry

Machines, 2022
Space target feature extraction and space infrared target recognition are important components of space situational awareness (SSA). However, owing to far imaging distance between the space target and infrared detector, the infrared signal of the target ...
Hao Zhang, Peng Rao, Xin Chen, Hui Xia, Shenghao Zhang   +4 more
doaj   +1 more source

Attention Mechanism Cloud Detection With Modified FCN for Infrared Remote Sensing Images

IEEE Access, 2021
Semantic segmentation (SS) has been widely applied for cloud detection (CD) in remote sensing images (RSIs) with high spatial and spectral resolution because of its effective pixel-level feature extraction structure.
Liyuan Li, Xiaoyan Li, Xin Liu, Wenwen Huang, Zhuoyue Hu, Fansheng Chen   +5 more
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Bandgap-independent photoconductive detection in two-dimensional Sb2Te3

Communications Materials, 2022
Achieving photodetectors with a wide spectral range and rapid response remains challenging. Here, Sb2Te3 nanosheets are used to construct a photodetector that covers visible to millimeter wavelengths, with a fast response time of 900 ns.
Wanli Ma, Tuntan Wu, Niangjuan Yao, Wei Zhou, Lin Jiang, Qinxi Qiu, Jingbo Li, Zhiming Huang   +7 more
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High efficiency and fast van der Waals hetero-photodiodes with a unilateral depletion region

Nature Communications, 2019
Photovoltaic devices based on 2D materials still suffer from low quantum efficiencies due to interfacial charge recombination and inefficient contacts.
Feng Wu, Qing Li, Peng Wang, Hui Xia, Zhen Wang, Yang Wang, Man Luo, Long Chen, Fansheng Chen, Jinshui Miao, Xiaoshuang Chen, Wei Lu, Chongxin Shan, Anlian Pan, Xing Wu, Wencai Ren, Deep Jariwala, Weida Hu   +17 more
doaj   +1 more source

Local Spatial–Temporal Matching Method for Space-Based Infrared Aerial Target Detection

Sensors, 2022
The feature of a space-based infrared signal is that the intensity of clutter is much stronger than that of an aerial target. Such a feature poses a great challenge to aerial target detection since the existing infrared target detection methods are prone
Lue Chen, Peng Rao, Xin Chen, Maotong Huang   +3 more
doaj   +1 more source

Velocity Estimation for Space Infrared Dim Targets Based on Multi-Satellite Observation and Robust Locally Weighted Regression

Remote Sensing, 2023
Velocity estimation of space moving targets is a key part of space situational awareness. However, most of the existing methods do not consider the satellite observation process, and the performance mainly depends on the preset target motion state, which
Shenghao Zhang, Peng Rao, Hao Zhang, Xin Chen   +3 more
doaj   +1 more source

High-Discrimination Circular Polarization Detection Based on Dielectric-Metal-Hybrid Chiral Metamirror Integrated Quantum Well Infrared Photodetectors

Sensors, 2022
Circular polarization detection enables a wide range of applications. With the miniaturization of optoelectronic systems, integrated circular polarization detectors with native sensitivity to the spin state of light have become highly sought after.
Jinyong Shen, Tianyun Zhu, Jing Zhou, Zeshi Chu, Xiansong Ren, Jie Deng, Xu Dai, Fangzhe Li, Bo Wang, Xiaoshuang Chen, Wei Lu   +10 more
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ON INFRARED DIVERGENCES

Nuclear Physics B, 1979
Revised 25 September 1978 We study the structure of infrared divergences in superrenormalizable interactions. We conjecture that there is an extension of the Bogoliubov-Parasiuk-Hepp theorem which copes also with infrared divergences. We discuss the consequences of this conjecture on the singularities of the Borel transform in a massless asymptotic ...
openaire   +1 more source

A Low Signal-to-Noise Ratio Infrared Small-Target Detection Network

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Space-based infrared detection technology is critical to space situational awareness, playing a significant role in noncooperative space object detection, threat perception, and space target surveillance.
Fenghong Li, Peng Rao, Wen Sun, Yueqi Su, Xin Chen   +4 more
doaj   +1 more source

How to characterize figures of merit of two-dimensional photodetectors

Nature Communications, 2023
Photodetectors based on two-dimensional (2D) materials have been the focus of intensive research and development over the past decade. However, a gap has long persisted between fundamental research and mature applications.
Fang Wang, Tao Zhang, Runzhang Xie, Zhen Wang, Weida Hu   +4 more
doaj   +1 more source