Zobrazeno 1 - 10
of 19
pro vyhledávání: '"James J. Shea"'
Publikováno v:
Current Developments in Lens Design and Optical Engineering II.
We present a design and tolerancing approach that permits the achievement of a high degree of spatial and spectral uniformity of response from a pushbroom imaging spectrometer. Such uniformity of response is crucial for the extraction of accurate spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6807cbd223a9009c35397d74428e739f
https://doi.org/10.1117/12.449557
https://doi.org/10.1117/12.449557
Autor:
James J. Shea
Publikováno v:
SPIE Proceedings.
The edge of the mono is used as a high contrast target to perform a visible 'knife-edge' MTF test on a digital imaging system in geostationary orbit. An image of the moon is taken in the camera's normal scanning mode, and traces across the sharpest e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d370daeaace245c9027cf84ae370556
https://doi.org/10.1117/12.325624
https://doi.org/10.1117/12.325624
Autor:
Jay Alan Overbeck, James J. Shea
Publikováno v:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IX.
One of the sub-tasks for the GOES N/O program is to redesign the assembly/test program to reduce instrument test time and to make test results more comparable to data that can be taken on orbit and at the spacecraft integrator's facility. Currently,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6445f77cae01439458190819347096de
https://doi.org/10.1117/12.319370
https://doi.org/10.1117/12.319370
Autor:
James J. Shea
Publikováno v:
SPIE Proceedings.
The edge of the moon is used to offer a high contrast target to perform a visible 'knife-edge' MTF test on a digital imaging system in geostationary orbit. An image of the moon is taken in the camera's normal scanning mode, and traces across the shar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20a191f3eb5ed45427963fbdc132d51c
https://doi.org/10.1117/12.298112
https://doi.org/10.1117/12.298112
Autor:
James J. Shea
Publikováno v:
GOES-8 and Beyond.
The GOES program seeks a reliable method to measure the imager's modulation transfer function (MTF) once the instrument is in orbit. This has proven difficult since there is no convenient target. It has been proposed to use the edge of the moon as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c4158bcfc2119752bc9e77ee6069718
https://doi.org/10.1117/12.254070
https://doi.org/10.1117/12.254070
Autor:
James J. Shea
Publikováno v:
GOES-8 and Beyond.
Post launch tests on the GOES satellite cameras called for determination of the positions of various imaging detectors. The GOES spacecraft's two cameras, the imager and sounder, are both scanners that use focal plane arrays. The below method determi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdc6c15df5d0f3692fc57efef812ada3
https://doi.org/10.1117/12.254069
https://doi.org/10.1117/12.254069
Publikováno v:
Optical Engineering. 46:063001
We present the design of a compact, wide-angle pushbroom imaging spectrometer suitable for exploration of solar system bodies from low orbit. The spectrometer is based on a single detector array with a broadband response that covers the range 400 to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cec5a41d64bb9903dda273514613ef0e
https://doi.org/10.1117/1.2749499
https://doi.org/10.1117/1.2749499
Autor:
James J. Shea
Publikováno v:
Journal of Electronic Imaging. 8:196
The edge of the moon is used as a high contrast target to perform a visible ''knife-edge'' modulation transfer function (MTF) test on a digital imaging system in geostationary orbit. An image of the moon is taken in the camera's normal scanning mode,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::435f0020f82ff75b0be813311a643481
https://doi.org/10.1117/1.482697
https://doi.org/10.1117/1.482697
Autor:
James J. Shea
Publikováno v:
Journal of Electronic Imaging. 3:117
Power cables present a persistent threat to helicopter pilots and have been responsible for a number of crashes in recent years. Active sensors are currently being developed to detect obstacles such as exposed power wires. However, the ability of pas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf0a650d1c862256e73794af69cb8868
https://doi.org/10.1117/12.172879
https://doi.org/10.1117/12.172879
Publikováno v:
American Journal of Psychiatry. 125:622-626
The authors report their experience with the administration of multiple monitored electroconvulsive treatment (MMECT), a technique involving multiple seizures and electronic EEG monitoring of the quality and duration of convulsive activity. Advantage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9652043aea032b4de612643522e12ff9
https://doi.org/10.1176/ajp.125.5.622
https://doi.org/10.1176/ajp.125.5.622