Results 21 to 30 of about 925,626 (245)

In-orbit Earth reflectance validation of TROPOMI on board the Sentinel-5 Precursor satellite [PDF]

Atmospheric Measurement Techniques, 2020
The goal of the study described in this paper is to determine the accuracy of the radiometric calibration of the TROPOMI instrument in flight, using its Earth radiance and solar irradiance measurements, from which the Earth reflectance is determined. The
L. G. Tilstra, M. de Graaf, P. Wang, P. Stammes   +3 more
doaj   +1 more source

Initial Drift Correction and Spectral Calibration of MarSCoDe Laser-Induced Breakdown Spectroscopy on the Zhurong Rover

Remote Sensing, 2022
The Mars Surface Composition Detector (MarSCoDe) carried by the Zhurong rover of China’s Tianwen-1 mission uses Laser-Induced Breakdown Spectroscopy (LIBS) to detect and analyze the material composition on Martian surfaces. As one extraterrestrial remote
Liangchen Jia, Xiangfeng Liu, Weiming Xu, Xuesen Xu, Luning Li, Zhicheng Cui, Ziyi Liu, Rong Shu   +7 more
doaj   +1 more source

Optimized Spectrometers Characterization Procedure for Near Ground Support of ESA FLEX Observations: Part 1 Spectral Calibration and Characterisation

Remote Sensing, 2018
The paper presents two procedures for the wavelength calibration, in the oxygen telluric absorption spectral bands (O2-A, λc = 687 nm and O2-B, λc = 760.6 nm), of field fixed-point spectrometers used for reflectance and Sun-induced fluorescence ...
Laura Mihai, Alasdair Mac Arthur, Andreas Hueni, Iain Robinson, Dan Sporea   +4 more
doaj   +1 more source

Robust algorithm for calibration of robotic manipulator model [PDF]

, 2013
The paper focuses on the robust identification of geometrical and elastostatic parameters of robotic manipulator. The main attention is paid to the efficiency improvement of the identification algorithm.
ABBA, Gabriel, KLIMCHIK, Alexandr, WU, Yier, GARNIER, Sébastien, FURET, Benoit, PASHKEVICH, Anatol   +5 more
core   +1 more source

Calibration of Multi-wavelength Raman Polarization Lidar

EPJ Web of Conferences, 2015
The current high energy cosmic ray detection technology, including Cherenkov telescopes and fluorescence detector, is mainly limited by uncertainties in the determination of atmospheric parameters.
Wang Xuan, Boselli Antonella, Sannino Alessia, Song Changbo, Spinelli Nicola, Zhao Yiming, Pan Chao   +6 more
doaj   +1 more source

MULTI-WAVELENGTH AIRBORNE LASER SCANNING FOR ARCHAEOLOGICAL PROSPECTION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Airborne laser scanning (ALS) is a widely used technique for the sampling of the earth's surface. Next to the widely used geometric information current systems provide additional information about the signal strength of each echo.
C. Briese, C. Briese, M. Pfennigbauer, A. Ullrich, M. Doneus, M. Doneus   +5 more
doaj   +1 more source

BER performance in wavelength packet-switched WDM systems during nano-second wavelength switching events [PDF]

, 2004
An important characteristic of wavelength tuneable laser transmitters is that as they tune between output wavelength channels they may generate light at a range of other wavelengths.
Dunne, J., Barry, Liam P., Mullane, T., Dantcha, Antonia, Murphy, John, McDonald, David   +5 more
core   +2 more sources

Multi-Wavelength Digital-Phase-Shifting Moiré Based on Moiré Wavelength

Applied Sciences, 2019
Multi-wavelength digital-phase-shifting moiré was demonstrated using multiple moiré wavelengths determined by system calibration over the full working depth.
Fatemeh Mohammadi, Jonathan Kofman
doaj   +1 more source

Gas Absorption Center-Based Wavelength Calibration Technique in QEPAS System for SNR Improvement

Photonic Sensors, 2018
A simple and effective wavelength calibration scheme is proposed in a quartz enhanced photoacoustic spectroscopy (QEPAS) system for trace gas detection. A reference gas cell is connected an InGaAs photodetector for detecting the absorption intensity peak
Zongliang Wang, Jun Chang, Qi Liu, Cunwei Tian, Qinduan Zhang   +4 more
doaj   +1 more source

Detection of Gas Leakage Concentration of Heptafluoroisobutyronitrile Based on Infrared Spectroscopy

Journal of Harbin University of Science and Technology
The basic research and key technology research on new environmentally friendly gases such as heptafluoroisobutyronitrile (HFIBN) gas mixture as insulating medium in high-voltage equipment have matured, and new environmentally friendly power equipment ...
YANG Jianzhou, HE Hong, CUN Guowu, WANG Anjing   +3 more
doaj   +1 more source