Results 11 to 20 of about 3,607,382 (286)
Characterization and correction of stray light in TROPOMI-SWIR [PDF]
Atmospheric Measurement Techniques, 2018 The shortwave infrared (SWIR) spectrometer module of the Tropospheric Monitoring Instrument (TROPOMI), on board the ESA Copernicus Sentinel-5 Precursor satellite, is used to measure atmospheric CO and methane columns.
P. J. J. Tol +11 more
doaj +4 more sources
Stray light entrance pupil: an efficient tool for stray light characterization
Optical Engineering, 2020 <p>Stray light represents a major performance limitation for optical instruments. Analyses are done with ray-tracing software to evaluate the stray light performances of a design and, if necessary, improve it before manufacturing. Accurate simulations, however, require sending a sufficient number of rays.
Clermont, Lionel +4 more
openaire +2 more sources
A Fast Star-Detection Algorithm under Stray-Light Interference
Photonics, 2023 The interference caused by stray light leads to the invalid attitude of star sensors in orbit, thus affecting the attitude control of satellites. In order to overcome this problem, this paper proposes a fast star-detection algorithm with strong stray ...
Kaili Lu +5 more
doaj +2 more sources
Applied Sciences, 2022 An aspherical airborne camera has excellent performance in the field of photoelectric reconnaissance equipment. However, the image plane contrast of the optical system will be reduced by stray light originating from inside or outside of the optical ...
Jinliang Li +3 more
doaj +2 more sources
Stray light characterization with ultrafast time-of-flight imaging [PDF]
Scientific Reports, 2021 Understanding stray light (SL) is a crucial aspect in the development of high-end optical instruments, for instance space telescopes. As it drives image quality, SL must be controlled by design and characterized experimentally.
L. Clermont, W. Uhring, M. Georges
doaj +2 more sources
A model for suppressing stray light in astronomical images based on deep learning [PDF]
Scientific ReportsWide-Field Small Aperture Telescopes (WFSAT) are widely used for surveilling space objects. Due to their wide-field of view (FOV) characteristics, these telescopes can cover a large areas of the sky at once, improving observation efficiency.
Mo Chen +9 more
doaj +2 more sources
Stray light correction in the optical spectroscopy of crystals. [PDF]
Appl Spectrosc, 2015 It has long been known in spectroscopy that light not passing through a sample, but reaching the detector (i.e., stray light), results in a distortion of the spectrum known as absorption flattening. In spectroscopy with crystals, one must either include such stray light or take steps to exclude it.
Hendler RW +6 more
europepmc +6 more sources
Deep Learning Models to Reduce Stray Light in TJ-II Thomson Scattering Diagnostic [PDF]
SensorsNuclear fusion is a potential source of energy that could supply the growing needs of the world population for millions of years. Several experimental thermonuclear fusion devices try to understand and control the nuclear fusion process.
Ricardo Correa +5 more
doaj +2 more sources
Time resolved characterization of stray light
Optical Measurement Systems for Industrial Inspection XII, 2021 Traditional approach to stray light characterization is intrinsically limited. While the stray light level in an optical instrument can be measured, it is not possible to derive from experimental measurements the origin of the different features. Consequently, when unexpectedly high stray light is present, it is extremely difficult to find how to ...
Clermont, Lionel +2 more
openaire +5 more sources
Multiple-Diffraction Subtractive Double Monochromator with High Resolution and Low Stray Light
Applied SciencesSpectrometers play a crucial role in photonic applications, but their design involves trade-offs related to miniaturization, spectral fidelity, and their measurement dynamic range.
Yinxin Zhang +5 more
doaj +2 more sources