Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Demos T. Kyrazis"'
Autor:
Thomas C. Farrell, Darryl J. Sanchez, Patrick R. Kelly, Anita L. Gallegos, Terry J. Brennan, Jason M. Holzman, Julie C. Smith, Denis W. Oesch, Demos T. Kyrazis
Publikováno v:
SPIE Proceedings.
The Air Force Research Laboratory (AFRL) is developing and extending a model of the boundary layer that takes, as input, common atmospheric measurements and ground condition parameters, and predicts key parameters of optical turbulence such as streng
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e48b1bd5ea688ce80a8fcddc470c0d5
https://doi.org/10.1117/12.931432
https://doi.org/10.1117/12.931432
Autor:
Wiley T. Black, Frank D. Eaton, Demos T. Kyrazis, R. Alastair Black, G. D. Nastrom, Don G. Black
Publikováno v:
SPIE Proceedings.
A recent measurement campaign at Vandenberg Air Force Base, Calif. involved taking simultaneous observations with a VHF radar and high-data-rate (1-micron diameter) platinum wires to sense optical turbulence (from temperature fluctuations). The radar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ed500fa6212e794dab7c49fc252135e
https://doi.org/10.1117/12.827294
https://doi.org/10.1117/12.827294
Publikováno v:
SPIE Proceedings.
Balloons, similar to those used for meteorological observations, are commonly used to carry a small instrumentation package for measuring optical turbulence in the atmosphere as a function of altitude. Two temperature sensors, one meter apart, measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22bb2e2910b217d45a8f25b21ef79542
https://doi.org/10.1117/12.827540
https://doi.org/10.1117/12.827540
Autor:
Dari Dexheimer, Jennifer C. Ricklin, Bryce Schumm, Michael L. Jensen, Demos T. Kyrazis, Arun K. Majumdar, Marjorie A. Shoemake, Frank D. Eaton, Matthew P. Dierking
Publikováno v:
SPIE Proceedings.
New results of the (temperature) refractive index structure parameter (CT2), Cn2 are presented from fast response sensor observations near the ground and also using a kite/tethered blimp platform and an aircraft, at the Edward Air Force Base in Mojav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e96213469362ee4c7361411b13f0963
https://doi.org/10.1117/12.684010
https://doi.org/10.1117/12.684010
Publikováno v:
SPIE Proceedings.
Methodology is presented using observations from a radar and new measurement system to address several fundamental turbulence issues related to laser beam propagation that impact high energy laser (HEL) and laser communication systems. The successful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1106d4e22ef63d54e38e80146221fa80
https://doi.org/10.1117/12.563470
https://doi.org/10.1117/12.563470
Publikováno v:
SPIE Proceedings.
Understanding the turbulence along a propagation path is required to evaluate new methods for tracking, pointing, and compensation of laser beams, studying image degradation, and interpreting remote sensing observations. This paper presents observati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb99fa4c8deb07c5753960911d2d77d7
https://doi.org/10.1117/12.487745
https://doi.org/10.1117/12.487745
Publikováno v:
SPIE Proceedings.
This paper present new methodology to address critical refractivity turbulence issues for laser propagation using a new measurement system-a portable balloon-ring platform with multiple fine wire sensors at several separations. All raw data is transm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ea16daaab43376d5353e80f6b5d3fcc
https://doi.org/10.1117/12.472364
https://doi.org/10.1117/12.472364
Autor:
Demos T. Kyrazis
Publikováno v:
SPIE Proceedings.
Other fluid dynamic phenomena, in addition to isotropic turbulence, can produce index of refraction fluctuations within the atmosphere. The stratified conditions in the upper atmosphere lead to phenomena such as thin shear layers of the order of a fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e6325e343ceb92b732c4d45d0b60035
https://doi.org/10.1117/12.207006
https://doi.org/10.1117/12.207006
Autor:
Demos T. Kyrazis
Publikováno v:
Optical Engineering. 52:071403
We discuss aspects of the development of the Airborne Laser Laboratory. Our discussion is historical in nature and consists of the text from a speech given on the occasion of the Airborne Laser Laboratory leaving Kirtland Air Force Base (AFB) to fly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4b5cda23fcb1951c01d78e9ab59585c
https://doi.org/10.1117/1.oe.52.7.071403
https://doi.org/10.1117/1.oe.52.7.071403
Autor:
Kenneth P. Bishop, Michael S. Hayes, T. Bryan Scruggs, Donna D. B. Keating, Demos T. Kyrazis, Amanda J. Preble, John B. Wissler, Frank D. Eaton
Publikováno v:
SPIE Proceedings.
A joint radar/aircraft optical turbulence measurement is discussed. The joint measurement was made over White Sands, New Mexico with a KC135E aircraft equipped with fiber film temperature probes and a ground-based atmospheric profiler. General meteor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94124ae500f7e8e9ecca23a5f6be2b90
https://doi.org/10.1117/12.187591
https://doi.org/10.1117/12.187591