Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Karl K. Klett"'
Publikováno v:
Laser Communication and Propagation through the Atmosphere and Oceans VIII.
Mid-wave (MW) and long-wave infrared (LWIR) spectral bands (3 to 5 μm and 9 to 14 μm) are known for their robust transmission characteristics in free-space optical communications (FSOC) under various weather conditions such as haze, fog, rain, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::012b7cbd2da17d00ea02bfcd35935f9e
https://doi.org/10.1117/12.2530969
https://doi.org/10.1117/12.2530969
Publikováno v:
Imaging and Applied Optics 2016.
We have acquired 3-D biometric images using digital holography. This was accomplished using eyesafe (~1550 nm) telecom fiber lasers at two wavelengths. The two images were aligned, with respect to phase, and then subtracted to obtain a wrapped image.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6aaf205cda1c60f9f3f8438e2551ca79
https://doi.org/10.1364/aio.2016.ait1b.2
https://doi.org/10.1364/aio.2016.ait1b.2
Publikováno v:
Imaging and Applied Optics.
We describe a phase unwrapping algorithm for digital holographic images. The algorithm uses preprocess smoothing, phase gradient calculations, and amplitude measures to determine the reliability of a given data point, and follows a non-continuous pat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e4c4d931995dd159a50390ad361a30f
https://doi.org/10.1364/aopt.2013.jtu4a.11
https://doi.org/10.1364/aopt.2013.jtu4a.11
Autor:
Karl K. Klett
Publikováno v:
SPIE Proceedings.
An analysis was performed, using MODTRAN, to determine the best filters to use for detecting the muzzle flash of an AK-47 in daylight conditions in the desert. Filters with bandwidths of 0.05, 0.1, 0.5, 1.0, 3.0, and 5.0 nanometers (nm) were analyzed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07a490248b66da4f9a7f38b31d6e29a7
https://doi.org/10.1117/12.851049
https://doi.org/10.1117/12.851049
Publikováno v:
SPIE Proceedings.
The optical performance of an infrared sparse sensor detector system is modeled. Such a system, due to its low cost, uses single element, spherical, off-the-shelf optical components that may produce poor quality off-axis images. Since sensors will no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c02ee9644872e49694eacdbe0c06cde7
https://doi.org/10.1117/12.782193
https://doi.org/10.1117/12.782193
Autor:
Karl K. Klett, S. M. Hill
Publikováno v:
SPIE Proceedings.
A potential calibration strategy for the N-P series Solar X-ray Imager (SXI), on the Geostationary Operational Environmental Satellite (GOES), that uses an astronomical X-ray source (the Crab Nebula) is analyzed below. The Crab Nebula is one of the b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::066891f513d6f9f1522375a42f8fbf10
https://doi.org/10.1117/12.680800
https://doi.org/10.1117/12.680800
Autor:
Karl K. Klett
Publikováno v:
Science News. 132:35
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82bfaf6f97f372ea12f3b6fb238f8fe8
https://doi.org/10.2307/3971809
https://doi.org/10.2307/3971809