Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Gilda Fathi"'
Autor:
Gilda Fathi, James Camparo
Publikováno v:
2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC).
How does one directly assess the quality of a Rb atomic clock signal remotely and in real time? Typically, one monitors the clock's 2nd harmonic signal, S2, which in the quasi-static approximation is a measure of the correction signal's slope, dS1/d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf239c4b2f4bb82788fe93cbecefa0c8
https://doi.org/10.1109/eftf-ifc.2013.6702070
https://doi.org/10.1109/eftf-ifc.2013.6702070
Autor:
James Camparo, Gilda Fathi
Publikováno v:
2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum (FCS) Proceedings.
The 2nd harmonic signal has been recognized for some time as a “status-of-health” indicator for Rb clocks. Unfortunately, while the 2nd harmonic signal can provide qualitative assessments of clock-signal health, at present there is no analytic th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::990757faa80b5db2ef9c7668e1f53c05
https://doi.org/10.1109/fcs.2011.5977276
https://doi.org/10.1109/fcs.2011.5977276
Autor:
Gilda Fathi, James Camparo
Publikováno v:
2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time forum.
Rubidium atomic clocks that fly on GNSS satellites employ the light from rf-discharge lamps for atomic signal generation and detection. In this application, the performance of the atomic clock and the capabilities of the navigation system depend sens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08672cfe1d91d7f07f1d2458f0a3e90a
https://doi.org/10.1109/freq.2009.5168340
https://doi.org/10.1109/freq.2009.5168340
Publikováno v:
2009 IEEE Aerospace conference.
A dual UV, Rayleigh/nitrogen Raman LIDAR system was developed for the purpose of profiling aerosols at vertical ranges between 0.025 and 5 km. The 355 nm LIDAR was operated in El Segundo, California during June and July 2008, during a period of inten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b6dd0e514ac60f0e8404f67d72f327
https://doi.org/10.1109/aero.2009.4839447
https://doi.org/10.1109/aero.2009.4839447
Autor:
Ranjit Pradhan, Judy Piranian, Gilda Fathi, Kang-Bin Chua, Tomasz Jannson, Russell M. Kurtz, Albert O. Okorogu, Thomas Forrester
Publikováno v:
SPIE Proceedings.
Automatic target recognition (ATR) can be accomplished by many methods, including recognition of vibrometric signatures. In many cases, ATR is enhanced by photorefractive amplification, a two-wave mixing effect in which two input beams form a dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f27e32ca2ba7643d698c8b3b00ba5bdc
https://doi.org/10.1117/12.679763
https://doi.org/10.1117/12.679763
Publikováno v:
Optical Engineering. 53:036105
Pulsed fiber lasers bear great promise as optical transmitters for remote sensors, having tight size, power consumption, and ruggedness constraints. We discuss recently introduced laser architectures and components supporting power scaling of efficie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c095461ef5ad446aa0631bf029d6443
https://doi.org/10.1117/1.oe.53.3.036105
https://doi.org/10.1117/1.oe.53.3.036105
Autor:
James Camparo, Gilda Fathi
Publikováno v:
Journal of Applied Physics. 105:103302
Atomic clocks that fly on global-navigation satellites such as global positioning system (GPS) and Galileo employ light from low-temperature, inductively coupled plasmas (ICPs) for atomic signal generation and detection (i.e., alkali/noble-gas rf-dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e3b4bc024878cb3db1ae9dc69862772
https://doi.org/10.1063/1.3126488
https://doi.org/10.1063/1.3126488