Article
Chemistry, Analytical
Baolin Zhao, Kaihua Zhang, Yaxin Yu, Kun Yu, Yufang Liu
Summary: This paper confirms, through experiments, that changes in ambient temperature are the main cause of dark output noise drift. It also investigates the impact of dark output noise drift in fiber optic spectrometers on emissivity measurements. Two methods, the mean correction scheme and the linear fitting correction scheme, were proposed for characterizing and correcting the dark output noise offset in fiber optic spectrometers, with the linear fitting correction scheme being more effective. The mean correction scheme achieves a calibration relative error of less than 0.8% for silicon carbide (SIC) emissivity when the wavelength is greater than 1600 nm, while the linear fitting correction scheme achieves a calibration relative error of less than 0.62%. This work resolves the problem of dark output noise drift in prolonged measurement based on fiber optic spectrometers, improving the accuracy and reliability of emissivity and quantitative radiation measurement.
Article
Chemistry, Multidisciplinary
Haoting Du, Zhentao Gong, Dandan Li, Yun Wang, Yun Zhao, Jintong Xu, Dexin Sun
Summary: A quantum well infrared photodetector (QWIP) dark current measurement method based on focal-plane temperature is proposed, along with a method to reduce dark current noise. The response model and dark current model of the long-wave infrared QWIP detection system are established, and experiments are conducted to measure the dark current values of the QWIP at different temperatures. A dark current noise correction method is proposed and experiments are carried out to validate its effectiveness. The results show a significant reduction in temporal noise, demonstrating the potential of this method for promoting the application of QWIPs in LWIR remote sensing detection.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Haoting Du, Jintong Xu, Zihao Yin, Mengyang Chai, Dexin Sun
Summary: This paper proposes a dark current noise correction method based on dark pixels, which reduces the transient dark current noise of QWIP imaging in complex thermal environments by utilizing the characteristics of dark pixels.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Lujia Xu, Wenzhu Liu, Haohui Liu, Cangming Ke, Mingcong Wang, Chenlin Zhang, Erkan Aydin, Mohammed Al-Aswad, Konstantinos Kotsovos, Issam Gereige, Ahmed Al-Saggaf, Aqil Jamal, Xinbo Yang, Peng Wang, Frederic Laquai, Thomas G. Allen, Stefaan De Wolf
Summary: This study evaluates the economic impact of thermal effects on PV systems by establishing a temperature-dependent levelized cost of energy (LCOE) model and introducing a new metric, gamma. The investigation focuses on the root causes of heating in solar cells and modules, particularly in crystalline-Si (c-Si) PVs, to quantify ways to mitigate undesired heating effects.
Article
Engineering, Electrical & Electronic
Hang Zhang, Chengliang Li, Hao Xue, Chao Lin, Yuquan Zheng
Summary: The dark current is a major factor affecting the performance of infrared photodetectors, restricting integration time and decreasing signal-to-noise ratio. Maintaining an extremely low temperature is a common method to suppress the dark current, but it consumes a lot of energy. This article presents a correction method that calculates and subtracts the instantaneous dark background of each pixel based on the real-time focal plane array (FPA) temperature to eliminate the influence of the dark current on image quality. Additionally, multiframe superposition is used to enhance the performance of the infrared hyperspectral imager. The noise equivalent temperature difference (NETD) in the imaging system is better than 0.3 K after merging 32 frames.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Electrical & Electronic
Huimin Wang, Zhiliang Xu, Xinglai Ge, Yongkang Liao, Yongheng Yang, Yi Zhang, Bo Yao, Yuheng Chai
Summary: This article proposes a JTM method based on TOV and CNN to provide accurate junction temperature information under different conditions.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Optics
Qiushui Zheng, Tianxiang Qin, Wenbo Li, Xiaoyan Wang, Yunhan Huang, Zhiying Liu
Summary: The article discusses the application of a plate beam splitter in optical systems and the potential aberrations that may occur. By establishing calculation formulas and conducting experiments to verify them, a formula for calculating cylindrical lens curvature is proposed to improve image quality.
Article
Geochemistry & Geophysics
Gang Lv, Jinning Li, Chunlai Li, Jian Jin, Yue Lin, Rui Xu, Zhiping He
Summary: This study established a thermal analysis model of the Lunar Mineralogical Spectrometer (LMS) and conducted experiments to obtain consistent spectral data through temperature correction. Ground tests showed that after temperature correction, the average errors of the data were relatively small.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Engineering, Multidisciplinary
Yichen Pan, Zhenyu Liu, Zhen Fang, Lidong Du, Zhan Zhao
Summary: Differential pressure solid-state anemometers are ideal for mobile meteorological monitoring due to their compact size, high precision, and durability. However, they face challenges in accuracy when encountering large angle-of-attack errors. An AOA correction method based on theoretical analysis and CFD simulation has been proposed and validated in a wind tunnel, demonstrating accurate wind parameter measurements within a specific AOA range.
Article
Thermodynamics
Xiao-Jian Dong, Jia-Ni Shen, Zi-Feng Ma, Yi-Jun He
Summary: Accurate prediction of cell temperature and output power is crucial for the optimal design and operation of photovoltaic systems. This study proposes a hybrid modeling approach based on a universal radial basis function neural network to model the cell temperature and circuit parameters. The effectiveness of the proposed approach is validated using experimental data from commercial and laboratory PV plants, indicating its potential for accurate output power prediction across different PV types and weather conditions.
Article
Engineering, Electrical & Electronic
Zhou Fengbo, Zhu Hongqiu, Li Changgeng
Summary: This paper proposes an optical system error correction method for online detection of a miniature optical fiber spectrometer. By using denoising and light source stabilization methods, the measurement accuracy of the spectral signal is improved, making it suitable for online detection of multi-component substances.
LASER & OPTOELECTRONICS PROGRESS
(2022)
Article
Energy & Fuels
Yan Wang, Qing Gao, Hewu Wang
Summary: This study investigates the impact of structural design and flow properties of a refrigerant plate on battery thermal management performance. Through computational fluid dynamics analysis, the optimal plate type is determined for improved cooling and thermal uniformity. The novel cooling method shows promising results in maintaining temperature uniformity and decreasing battery temperature under various operating conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Jiayu Xu, Xuebao Li, Xiang Cui, Zhibin Zhao, Shenyang Mo, Bing Ji
Summary: This study focuses on trap characteristics, electrical properties, and temperature dependence of surface potential decay in silicone gel used for encapsulation in IGBT power modules. Unique to previous research, the energy distributions of electron or hole traps in silicone gel are determined using a double-trap energy level model. Additionally, the study highlights the temperature-dependent characteristics of surface potential decay, showing an increase in decay rate as temperature rises, especially above 80 degrees C.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(2021)
Article
Chemistry, Analytical
Shuonan Shan, Jingwen Li, Peiyuan Liu, Qiaolin Li, Xiaohao Wang, Xinghui Li
Summary: This paper proposes a miniature multi-channel spectrometer using a microlens array grating (MLAG) that allows simultaneous focusing and dispersion. The MLAG spectrometer is compact, lightweight, and has a high number of channels. Experimental results demonstrate low wavelength position repeatability and displacement measurement repeatability for the designed MLAG multi-channel spectrometer.
Article
Thermodynamics
Ian Pope, Juan P. Hidalgo, Rory M. Hadden, Jose L. Torero
Summary: A study on the impact of thermocouples embedded in materials of lower thermal conductivity showed that the presence of thermocouples can distort the surrounding temperature field, leading to measurement errors. By analyzing key factors and using finite element models, it was found that thermal properties, geometry, and heating regime all affect the thermal disturbance.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Remote Sensing
Andres Kuusk, Joel Kuusk
INTERNATIONAL JOURNAL OF REMOTE SENSING
(2018)
Article
Environmental Sciences
Javier Pacheco-Labrador, Andreas Hueni, Laura Mihai, Karolina Sakowska, Tommaso Julitta, Joel Kuusk, Dan Sporea, Luis Alonso, Andreas Burkart, M. Pilar Cendrero-Mateo, Helge Aasen, Yves Goulas, Alasdair Mac Arthur
Article
Environmental Sciences
Viktor Vabson, Joel Kuusk, Ilmar Ansko, Riho Vendt, Krista Alikas, Kevin Ruddick, Ave Ansper, Mariano Bresciani, Henning Burmester, Maycira Costa, Davide D'Alimonte, Giorgio Dall'Olmo, Bahaiddin Damiri, Tilman Dinter, Claudia Giardino, Kersti Kangro, Martin Ligi, Birgot Paavel, Gavin Tilstone, Ronnie Van Dommelen, Sonja Wiegmann, Astrid Bracher, Craig Donlon, Tania Casal
Article
Environmental Sciences
Viktor Vabson, Joel Kuusk, Ilmar Ansko, Riho Vendt, Krista Alikas, Kevin Ruddick, Ave Ansper, Mariano Bresciani, Henning Burmester, Maycira Costa, Davide D'Alimonte, Giorgio Dall'Olmo, Bahaiddin Damiri, Tilman Dinter, Claudia Giardino, Kersti Kangro, Martin Ligi, Birgot Paavel, Gavin Tilstone, Ronnie Van Dommelen, Sonja Wiegmann, Astrid Bracher, Craig Donlon, Tania Casal
Article
Environmental Sciences
Lea Hallik, Andres Kuusk, Mait Lang, Joel Kuusk
Review
Environmental Sciences
Kevin G. Ruddick, Kenneth Voss, Andrew C. Banks, Emmanuel Boss, Alexandre Castagna, Robert Frouin, Martin Hieronymi, Cedric Jamet, B. Carol Johnson, Joel Kuusk, Zhongping Lee, Michael Ondrusek, Viktor Vabson, Riho Vendt
Review
Environmental Sciences
Kevin G. Ruddick, Kenneth Voss, Emmanuel Boss, Alexandre Castagna, Robert Frouin, Alex Gilerson, Martin Hieronymi, B. Carol Johnson, Joel Kuusk, Zhongping Lee, Michael Ondrusek, Viktor Vabson, Riho Vendt
Article
Environmental Sciences
Andres Kuusk, Joel Kuusk, Mait Lang
Article
Environmental Sciences
Agnieszka Bialek, Sarah Douglas, Joel Kuusk, Ilmar Ansko, Viktor Vabson, Riho Vendt, Tania Casal
Article
Environmental Sciences
Andrew Clive Banks, Riho Vendt, Krista Alikas, Agnieszka Bialek, Joel Kuusk, Christophe Lerebourg, Kevin Ruddick, Gavin Tilstone, Viktor Vabson, Craig Donlon, Tania Casal
Article
Environmental Sciences
David Antoine, Vincenzo Vellucci, Andrew C. Banks, Philippe Bardey, Marine Bretagnon, Veronique Bruniquel, Alexis Deru, Odile Hembise Fanton d'Andon, Christophe Lerebourg, Antoine Mangin, Didier Crozel, Stephane Victori, Alkiviadis Kalampokis, Aristomenis P. Karageorgis, George Petihakis, Stella Psarra, Melek Golbol, Edouard Leymarie, Agnieszka Bialek, Nigel Fox, Samuel Hunt, Joel Kuusk, Kaspars Laizans, Maria Kanakidou
Article
Environmental Sciences
Gavin Tilstone, Giorgio Dall'Olmo, Martin Hieronymi, Kevin Ruddick, Matthew Beck, Martin Ligi, Maycira Costa, Davide D'Alimonte, Vincenzo Vellucci, Dieter Vansteenwegen, Astrid Bracher, Sonja Wiegmann, Joel Kuusk, Viktor Vabson, Ilmar Ansko, Riho Vendt, Craig Donlon, Tania Casal
Article
Environmental Sciences
Agnieszka Bialek, Teresa Goodman, Emma Woolliams, Johannes F. S. Brachmann, Thomas Schwarzmaier, Joel Kuusk, Ilmar Ansko, Viktor Vabson, Ian C. Lau, Christopher MacLellan, Sabine Marty, Michael Ondrusek, William Servantes, Sarah Taylor, Ronnie Van Dommelen, Andrew Barnard, Vincenzo Vellucci, Andrew C. Banks, Nigel Fox, Riho Vendt, Craig Donlon, Tania Casal
Article
Environmental Sciences
Eva Neuwirthova, Andres Kuusk, Zuzana Lhotakova, Joel Kuusk, Jana Albrechtova, Lea Hallik
Summary: This study investigated the seasonal changes in biophysical, anatomical, and optical traits of young leaves formed by sylleptic growth and mature leaves formed by proleptic growth. Leaf developmental categories were found to influence top-of-canopy reflectance and should be considered in remote sensing studies. It was also suggested that sampling both young and mature leaves is necessary for robust linear models in remote sensing research.
Proceedings Paper
Engineering, Electrical & Electronic
Clemence Goyens, Kevin Ruddick, Joel Kuusk
2018 9TH WORKSHOP ON HYPERSPECTRAL IMAGE AND SIGNAL PROCESSING: EVOLUTION IN REMOTE SENSING (WHISPERS)
(2018)
