Results 41 to 50 of about 39,993 (167)
Sensors, 2018 A 1.6 μm differential absorption Lidar (DIAL) system for measurement of vertical CO2 mixing ratio profiles has been developed. A comparison of CO2 vertical profiles measured by the DIAL system and an aircraft in situ sensor in January 2014 over the ...
Yasukuni Shibata +5 more
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Development of Field-deployable Diode-laser-based Water Vapor Dial
EPJ Web of Conferences, 2016 In this paper, a field-deployable diode-laser-based differential absorption lidar (DIAL) has been developed for lower-tropospheric water vapor observation in Tokyo, Japan.
Le Hoai Phong Pham +2 more
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Cost-effective Fully Fiber-based DIAL Utilizing Wavelength Modulation for Laser Locking [PDF]
EPJ Web of ConferencesRecent advancements in Differential Absorption Lidar (DIAL) technology have led to the adoption of fully fiber-optic DIAL systems, offering superior robustness, reduced alignment sensitivity, and enhanced portability compared to traditional bulk-optic ...
Kikilich Nikita +6 more
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Research on Measuring Industrial Carbon Dioxide Emissions by Mobile Differential Absorption Lidar
Applied SciencesIndustrial activities represent the primary source of anthropogenic carbon dioxide (CO2) emissions, and accurate monitoring of industrial CO2 emissions is critical to mitigating greenhouse gas emissions.
Jinliang Zang +5 more
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First airborne water vapor lidar measurements in the tropical upper troposphere and mid-latitudes lower stratosphere: accuracy evaluation and intercomparisons with other instruments [PDF]
Atmospheric Chemistry and Physics, 2008 In the tropics, deep convection is the major source of uncertainty in water vapor transport to the upper troposphere and into the stratosphere. Although accurate measurements in this region would be of first order importance to better understand the ...
C. Schiller +8 more
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Improvement of CO2-DIAL Signal-to-Noise Ratio Using Lifting Wavelet Transform
Sensors, 2018 Atmospheric CO2 plays an important role in controlling climate change and its effect on the carbon cycle. However, detailed information on the dynamics of CO2 vertical mixing remains lacking, which hinders the accurate understanding of certain key ...
Chengzhi Xiang +4 more
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Enabling Technologies for Cross-Cutting Airborne and Spaceborne Water Vapor and Methane DIAL [PDF]
EPJ Web of ConferencesNASA Langley Research Center has developed the High-Altitude Lidar Observatory (HALO), a water vapor and methane Differential Absorption Lidar (DIAL) and High Spectral Resolution Lidar (HSRL) system to address the observational needs of weather, climate,
Nehrir Amin +16 more
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, 2007 We introduce C, a practical provably secure block cipher with a slow key schedule. C is based on the same structure as AES but uses independent random substitution boxes instead of a fixed one. Its key schedule is based on the Blum-Blum-Shub pseudo-random generator, which allows us to prove that all obtained security results are still valid when taking
Baignères, Thomas, Finiasz, Matthieu
openaire +1 more source
IET Science, Measurement & TechnologyTo locate and read the complex pointer meter dial for the images with uneven illumination, blurred dial, and tilted dial, this paper firstly proposes an improved BRISK‐FREAK algorithm for dial position. Then, combined with the Line Segment Detector (LSD)
Zhiniu Xu +6 more
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