5,791 to 5,800 of 6,761 Results
Oct 3, 2004
Karasik, Boris S.; Sergeev, Andrei V., 2004, "THz hot-electron photon counter", https://hdl.handle.net/2014/40549, IEEE Transactions on Applied Superconductivity Applied Superconductivity Conference, Jacksonville, Florida, October 3-8, 2004., JPL Open Repository
We present a concept for the hot-electron transition-edge sensor capable of counting THz photons. The main need for such a sensor is a spectroscopy on future space telescopes where a background limited NEP ~ 10ˉ²° W/H¹´² is expected at around 1 THz. Under these conditions, the ra... |
Oct 2, 2004
Cook, Richard A., 2004, "The Mars Exploration Rover project", https://hdl.handle.net/2014/40202, International Astronautical Congress, Vacouver, Bristish Columbia, Canada, October 02, 2004., JPL Open Repository
The twin rovers of the Mars Exploration Rover Project successfully landed on the surface of Mars in January 2004, and initiated a highly successful science and exploration campaign. This marked the culmination of an unprecedented four-year effort to design, build, launch, and ope... |
Oct 1, 2004
Bruegge, Carol J.; Helmlinger, Mark; Abdou, Wedad; Gaitley, Barbara J., 2004, "2003 Railroad Valley vicarious calibration experiment", https://hdl.handle.net/2014/37930, MERIS and AATSR Calibration and Geophysical Validation (MAVT-2003), Frascati, Italy, October 20, 2004, JPL Open Repository
The Multi-angle Imaging SpectroRadiometer (MISR) is one of five instruments on-board the EOS/Terra spacecraft. The instrument has nine cameras, which view up to 70 degrees forward and aft of the spacecraft track. |
Oct 1, 2004
Chang, Kurng Y., 2004, "V-Band separation shock characteristics", https://hdl.handle.net/2014/37486, 75th Shock and Vibration Symposium, Virginia Beach, VA, October 17, 2004, JPL Open Repository
This paper discusses the pyroshock characteristics and environments based on various test measurements conducted on several JPL spacecraft programs. |
Sep 30, 2004
Morabito, David; Hastrup, Rolf, 2004, "Use of the 37-38 GHz and 40-40.5 GHz Ka-bands for Deep Space communications", https://hdl.handle.net/2014/39999, 10th Ka and Broadband Communications Conference, Vicenza, Italy, September 30 - October 2, 2004., JPL Open Repository
This paper covers a wide variety of issues associated with the implementation and use of these frequency bands for deep space communications. Performance issues, such as ground station pointing stability, ground antenna gain, antenna pattern, and propagation effects such as due t... |
Sep 30, 2004
Tripon-Canseliet, Charlotte; Maestrini, Alain; Mehdi, Imran, 2004, "Design of a wideband 900 GHz balanced frequency tripler for radioastronomy", https://hdl.handle.net/2014/40037, Infrared and Millimeterwave Conference, Karlsrhue, Germany, September 28-30, 2004., JPL Open Repository
We report on the design of a fix-tuned split-block waveguide balanced frequency tripler working nominally at 900GHz. It uses a GaAs Schottky planar diode pair in a balanced configuration. The circuit will be fabricated with JPL membrane technology in order to minimize dielectric... |
Sep 29, 2004
Maiwald, Frank; Pearson, John C.; Ward, John S.; Schlecht, Erich; Chattopadhyay, Goutam; Gill, John J.; Ferber, R.; Tsang, Raymond; Lin, Robert H.; Peralta, Alejandro; Finamore, B.; Chun, William W.; Baker, John J.; Dengler, Robert J.; Javadi, Hamid H.; Siegel, Peter H.; Mehdi, Imran, 2004, "Solid-state terahertz sources for space applications", https://hdl.handle.net/2014/40755, International Journal of Infrared and Millimeter Waves Conference, Karlsruhe, Germany, September 29 - October 1, 2004., JPL Open Repository
This paper discusses the construction of solid-state frequency multiplier chains utilized far teraherz receiver applications such as the Herschel Space Observatory . Emphasis will he placed on the specific requirements to be met and challenges that were encountered. The availabil... |
Sep 29, 2004
Willacy, Karen; Bryden, Geoff; Langer, William, 2004, "Modeling chemistry in protostellar disks", https://hdl.handle.net/2014/37485, Max Planck Institute for Astronomy, Heidelberg, Germany, September, 29, 2004, JPL Open Repository
No abstract provided |
Sep 28, 2004
Nikora, Allen P.; Munson, John C., 2004, "The effects of fault counting methods on fault model quality", https://hdl.handle.net/2014/40026, 28th International Computer Software adn Applications Conference (COMPSAC 2004), Hong Kong, People's Republic of China, September 9, 2004., JPL Open Repository
In this paper, we describe three other fault-counting techniques and compare the models resulting from the application of two of those methods to the models obtained from the application of our proposed definition. |
Sep 28, 2004
Diner, David J.; Kahn, Ralph A.; Braverman, Amy J.; Davies, Roger; Martonchik, John V.; Menzies, Robert T.; Ackerman, Thomas P.; Seinfeld, John H.; Anderson, Theodore L.; Charlson, Robert J.; Bösenberg, Jens; Collins, William D.; Rasch, Philip J.; Holben, Brent N.; Hostetler, Chris A.; Wielicki, Bruce A.; Miller, Mark A.; Schwartz, Stephen E.; Ogren, John A.; Penner, Joyce E.; Stephens, Graeme L.; Torres, Omar; Travis, Larry D.; Yu, Bin, 2004, "Paragon : a systematic, integrated approach to aerosol observation and modeling", https://hdl.handle.net/2014/41059, AIAA Space Meeting, San Diego, California, September 28, 2004., JPL Open Repository
Aerosols are generated and transformed by myriad processes operating across many spatial and temporal scales. Evaluation of climate models and their sensitivity to changes, such as in greenhouse gas abundances, requires quantifying natural and anthropogenic aerosol forcings and a... |
