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Pixel-Based Long-Wave Infrared Spectral Image Reconstruction Using a Hierarchical Spectral Transformer.
Sensors (Basel)
November 2024
Key Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
Long-wave infrared (LWIR) spectral imaging plays a critical role in various applications such as gas monitoring, mineral exploration, and fire detection. Recent advancements in computational spectral imaging, powered by advanced algorithms, have enabled the acquisition of high-quality spectral images in real time, such as with the Uncooled Snapshot Infrared Spectrometer (USIRS). However, the USIRS system faces challenges, particularly a low spectral resolution and large amount of data noise, which can degrade the image quality.
View Article and Find Full Text PDFEnhancing Open-Space Gas Detection Limit: A Novel Environmentally Adaptive Infrared Temperature Prediction Method for Uncooled Spectroscopy.
Sensors (Basel)
November 2024
Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.
Gas cloud imaging with uncooled infrared spectroscopy is influenced by ambient temperature, complicating the quantitative detection of gas concentrations in open environments. To solve the aforementioned challenges, the paper analyzes the main factors influencing detection errors in uncooled infrared spectroscopy gas cloud imaging and proposes a temperature correction method to address them. Firstly, to mitigate the environmental effects on the radiative temperature output of uncooled infrared detectors, a snapshot-based, multi-band infrared temperature compensation algorithm incorporating environmental awareness was developed.
View Article and Find Full Text PDFA Review of Thermal Detectors of THz Radiation Operated at Room Temperature.
Sensors (Basel)
October 2024
Institute of Optoelectronics, Military University of Technology, S. Kaliskiego Str. 2, 00-908 Warsaw, Poland.
This article concerns optical detection issues in the terahertz (THz) range. This is a kind of guide to various types of uncooled thermal detectors in the most often applications. Particular attention is paid to the principle of their operation, technology, and practical features.
View Article and Find Full Text PDFLong-Term Radiometric Stability of Uncooled and Shutterless Microbolometer-Based Infrared Cameras.
Sensors (Basel)
October 2024
DOTA, ONERA, Université Paris-Saclay, 91120 Palaiseau, France.
Article Synopsis
- Uncooled and shutterless microbolometer cameras are efficient for infrared imaging on small satellites and drones due to their lightweight and passive design.
- Radiometric compensation is crucial for ensuring the accuracy of the images, especially in applications requiring precise radiometric data.
- The study investigates how the camera's environment affects radiometric accuracy and proposes hardware and software solutions that maintain calibration validity for up to 3 years based on indoor experiments.
Sensitivity and Performance of Uncooled Avalanche Photodiode for Thermoluminescent Dosimetry Applications.
Sensors (Basel)
September 2024
Faculty of Physics, Warsaw University of Technology, 00-662 Warsaw, Poland.
Detecting extremely low light signals is the basis of many scientific experiments and measurement techniques. For many years, a high-voltage photomultiplier has been the only practical device used in the visible and infrared spectral range. However, such a solution is subject to several inconveniences, including high production costs, the requirements of a supply voltage of several hundred volts, and a high susceptibility to mechanical damage.
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