2 edition of refractive-index structure parameter profiling system found in the catalog.
refractive-index structure parameter profiling system
G. R. Ochs
by U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Wave Propagation Laboratory, For sale by the National Technical Information Service in Boulder, Colo, Springfield, Va
Written in English
|Other titles||A refractive index structure parameter profiling system.|
|Statement||G.R. Ochs, J.J. Wilson, S. Abbott.|
|Series||NOAA technical memorandum ERL WPL -- 161.|
|Contributions||Wilson, J. J., Abbott, S., Wave Propagation Laboratory.|
|The Physical Object|
|Pagination||iii, 47 p. :|
|Number of Pages||47|
Optical fibers are extensively used in modern technology such as sensing, short-distance and long-distance telecommunications. This motivated many researchers to present different methods in order to characterize optical fibers and determine their refractive index profiles. In addition, variation of refractive index profiles of optical fibers suffering mechanical stresses or other external Cited by: 1. A passive optical method for estimating the level of atmospheric turbulence (structure parameter of the air refractive index C n 2) from the image jitter is is proposed to use a high-speed digital video camera and effective two-dimensional parallel algorithms of image processing for measuring C n 2 in real time. Results obtained by the active and passive optical methods, as well Cited by: 2.
For example, glass has a refractive index of about , meaning light waves propagate about times slower in water than in vacuum. A refractive index is a property of the material itself. Now an effective refractive index can be given for an optical component (e.g. a waveguide) as a measure of the overall delay of a light beam in that. Air, for example, has a refractive index of 1, while water has a refractive index of - which is why a straw appears to bend when you put it in a glass of water.
1. Temperature: Refractive index values are usually determined at standard temperature.A higher temperature means the liquid becomes less dense and less viscous, causing light to travel faster in the medium. This results in a smaller value for the. Refractive Index of Polymers. The refractive index (n) is an important optical property of polymers and is widely used in material science. The knowledge of the refractive index is crucial in all optical applications of transparent polymers. Since it is characteristic for each material, it can be used for identification purposes or for the.
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Knowles Middleton, 2 books David Whitfield, 2 books Cynthia Y. Young, 2 books Optical Society of America, 2 books V. Lukin, 2. Wilson, J. Overview. Works: 10 works in 17 publications in 1 language and library holdings A refractive-index structure parameter profiling system by G.
R Ochs optics Microbial biotechnology Microorganisms Motor ability Muscles Musculoskeletal system Optical instruments Refractive index Refractive index--Measurement Refuse and.
A semiempirical theory is developed which relates the refractive-index-structure parameter Cn2 in the lowest few tens of meters to the vertical gradients of wind speed and temperature and to a stability parameter.
This provides an indirect method of determining Cn2, or its temperature counterpart CT2, and the method is successfully applied to recent data which include directly measured CT2 values.
From this data set I compute the refractive index structure parameter C 2 n at four electromagnetic wavelengths—one each in the visible ( μm), the mid‐infrared ( μm), the near‐millimeter ( mm or GHz), and the radio regions.
Infrared scintillation measurements were obtained along refractive-index structure parameter profiling system book 7-km path over San Diego Bay concurrently with meteorological measurements obtained from a buoy at the midpoint of the path.
Bulk estimates of the refractive index structure parameter were computed from the buoy data and compared with scintillation-derived by: Basu, S. and He, P., “Quantifying the dependence of temp erature and refractive index structure parameters on atmospheric stability using direct and large-eddy simulations,” in [ Pr opagation.
Optical instruments works Search for books with subject Optical instruments. Search. Read. Read. Not In Library. Read. Applied Optics and Optical Engineering Rudolf Kingslake Not In Library.
A refractive-index structure parameter profiling system G. Ochs Not In Library. An optical inner-scale meterAccessible book, Optics. Jassim Mohammed Jassim et al Determine the optical turbulence parameter (Cn2) in Babylon City-Iraq | International Journal of Current Engineering and Technology, Vol.5, No.1 (Feb ) (3 b) presents the local meteorology data for this case.
The atmospheric structure constant of refractive index is an important parameter of denoting atmospheric turbulence, it was measured continuously in Hefei using QHTP-2 micro-thermal meter. A simple approach for estimating the refractive index structure parameter (Cn²) profile in the atmosphere.
Basu S. Utilizing the so-called Thorpe scale as a measure of the turbulence outer scale, we propose a physically-based approach for the estimation of Cn2 profiles in the lower by: 7. Atmospheric scintillations cause difficulties for applications where an undistorted propagation of electromagnetic radiation is essential.
These scintillations are related to turbulent fluctuations of temperature and humidity that are in turn related to surface heat fluxes. We developed an approach that quantifies these scintillations by estimating Cn2 from surface fluxes that are derived from.
This paper presents the CN2 model for calculating the micrometeorological influences on the refractive index structure parameter. The CN2 model is a semi-empirical algorithm developed by the U.S.
Army Research Laboratory to provide realistic values for the refractive index structure parameter over land given two vertical levels of conventional wind speed, temperature, and humidity data as by: P. Johnson and R. Christy. Optical constants of the noble metals, Phys. Rev. B 6, () Silver is often used as a coating material for broadband.
The refractive index structure constant of the atmosphere % á 6 is estimated E from the measurement results. So the derived arrival angle change is μrad.
As the focal length of this receiving optical system is m, Radius of the moving optical focus is μm, and it is estimated that the scattered. In a round optical fiber, the refractive index as a function of radial distance from the optical fiber axis along any fiber diameter.
Note: The refractive-index profile of a round optical fiber is approximately symmetrical about the optical fiber axis, i.e., the profile has zero-axis symmetry, i.e., zero. In order to study the influences of turbulence on wireless optical communication for slant link mode, which have never been investigated in coastal area that is usually regarded as a scene between inland and sea, an outdoor experiment for the model of the atmospheric refractive-index structure parameter was performed in Yantai, a coastal city in the east of by: 1.
In this paper, we propose a novel structure of metamaterials, unit cell of complementary split ring resonators at 10THz frequency. This structure has been simulated by FDTD methods and the S-parameters. Then we derive the parameters i.e.
refractive index, permittivity and permeability by using the S-parameters analysis techniqueFile Size: KB. In particular, the diffraction produced by the index depression of the MCVD fiber causes much degradation of the measurement accuracy not only in the reconstruction of the index depression but also in that of the whole refractive-index profile.
PMID: [PubMed]Cited by: 3. A refractive-index structure parameter profiling system [microform] / G.R. Ochs, J.J. Wilson, S. Abbott Optics in vision: foundations of visual optics and associated computations / Henri Obstfeld Explore.
USA1 US14/, USA USA1 US A1 US A1 US A1 US A US A US A US A1 US A1 US A1 Authority US United States Prior art keywords atmosphere platform airborne platform optical airborne Prior art date Legal status (The Cited by: 1.1.
Introduction. At low microwave frequencies, radars respond to spatial variations in the index of refraction of the air often characterized by the atmospheric refractive-index structure parameter, C n 2 While remote measurement of the atmospheric boundary layer (ABL) is complicated by the low radar reflectivity of clear-air turbulence structures, frequency-modulated, continuous-wave (FMCW Cited by: 1.Properties Estimation: Estimation of Refractive Index.
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