Evaluation of FEC for the atmospheric optical IM/DD channel [PDF]
, 2003 Channel measurements were performed by the German Aerospace Center in various near ground optical channels including a 1.5 km horizontal path as well as a 61km path.
Hennes Henniger +7 more
core +1 more source
Multiple Wavelength Free-Space Laser Communications [PDF]
, 2003 Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas +9 more
core +1 more source
PPK PROCESSING TO BOOST UAS ACCURACY IN CADASTRAL MAPPING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Unmanned Aerial Systems (UAS) are increasingly used in different applications, including 3D urban modelling, cadastral mapping, urban planning, GIS information system and other fields because of their advantages.
V. E. Oniga +8 more
doaj +1 more source
Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]
, 2007 The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core +1 more source
Scientific Reports, 2021 An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Oleg V. Mamontov +6 more
doaj +1 more source
Characterization of optical fiber imaging bundles for swept-source optical coherence tomography [PDF]
, 2011 Fiber imaging bundles have been investigated for use in endoscopic optical coherence tomography (OCT) systems, to obviate the requirement for scanning components within the endoscope probe section.
Helen D. Ford +3 more
core +1 more source
Detection of second-order nonlinear optical magnetization by mapping normalized Stokes parameters [PDF]
, 2013 A measurable magnetic (nonlocal) contribution to the second harmonic generation (SHG) of nonmagnetic materials is an intriguing issue related to chiral materials, such as biomolecules.
Larciprete, Maria Cristina +11 more
core +1 more source
Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel [PDF]
, 2006 Mitigation of index of refraction turbulence (IRT) effects is crucial in long-range atmospheric communication links. Diversity-transmission is one favorable way for fading compensation.
Perlot, Nicolas +7 more
core +1 more source
Frequency Selective Surface With Two Quasi-Independent Notch Frequencies
IEEE Access, 2019 A double-layer frequency selective surface (FSS) built on FR4 substrate exhibiting two notch frequencies in the 0-10-GHz range is introduced. Recently published examples demonstrate that further research needs to be undergone for obtaining separate ...
Ladislau Matekovits +2 more
doaj +1 more source
Multi-sensor system using plastic optical fibers for intrinsically safe level measurements [PDF]
, 2004 A system for measuring liquid level in multiple tanks using optical fibe technology has been developed. Oil fiel service industry or any sector requiring liquid level measurements in flammabl atmospheres can be benefite from this intrinsically safe ...
Gonzalo, Ana B. +3 more
core +1 more source