41,601 to 41,610 of 41,981 Results
Feb 1, 1993
Folkner, W.M.; McElrath, T.P., 1993, "Determination of Radio-Frame Position for Earth and Jupiter from Ulysses Encounter Tracking", https://hdl.handle.net/2014/34917, ['AAS/AIAA Space Flight Mechanics', 'Pasadena, CA'], JPL Open Repository
Radio metric tracking data acquired from the Ulysses spacecraft about its encounter with Jupiter in February 1992 allow an accurate measurement of some components of the orbital elements describing the positions of the Earth and Jupiter with respect to extragalactic radio sources... |
Feb 1, 1993
Carson, S. C.; Carswell, J. C.; McIntosh, R. E.; Li, Fuk K.; Nghiem, S. V.; Lou, S. H.; Neuman, G.; McLaughlin, David J., 1993, "Low Wind Speed Radar Backscatter Measurements at C- and Ku-Band Obtained", https://hdl.handle.net/2014/34912, Journal of Geophysical Research, JPL Open Repository
Radar backscatter measurements collected at both C- and Ku-Band during the recent |
Feb 1, 1993
Williams, A.; Seidel, D.J.; Maleki, L., 1993, "Generation of 369.4 nm Radiation by Efficient Doubling of a Diode Laser", https://hdl.handle.net/2014/34801, New Orleans, LA, JPL Open Repository
The trapped ytterbium ion frequency standard under development at JPL is designed to supply ultra-stable reference signals to be used in spacecraft tests of general relativity and other science experiments. Only diode lasers meet the requirements of low power comsumption and smal... |
Feb 1, 1993
Sharma, P. K.; Trinh, E. H.; Man, K. F., 1993, "Containerless Processing of Molten Tin Samples in a Controlled Oxygen Environment", https://hdl.handle.net/2014/34899, Denver, Colorado, USA, JPL Open Repository
Contamination due to oxygen or oxide layer formation is a major concern in containerless processing of metallic melts. |
Feb 1, 1993
Fijany, Amir, 1993, "Fast Time and Space Parallel Algorithms for Solution of Parabolic Partial Differential Equations", https://hdl.handle.net/2014/34955, USA, JPL Open Repository
In this paper, fast time- and Space -Parallel agorithms for solution of linear parabolic PDEs are developed. It is shown that the seemingly strictly serial iterations of the time-stepping procedure for solution of the problem can be completed decoupled. |
Feb 1, 1993
Phillips, R., 1993, "Scientific Research on Space Station Freedom", https://hdl.handle.net/2014/35103, Boston, Massachusetts, USA, JPL Open Repository
No abstract provided |
Feb 1, 1993
Fossum, Eric R., 1993, "Active Pixel Sensors: Are CCD's Dinosaurs?", https://hdl.handle.net/2014/34869, ['SPIE: Electronic Imaging', 'San Jose, CA'], JPL Open Repository
Charge-coupled devices (CCD's) are presently the technology of choice for most imaging applications. In the 23 years since their invention in 1970, they have evolved to a sophisticated level of performance. However, as with all technologies, we can be certain that they will be su... |
Jan 31, 1993
Eldred, D.B.; Gibson, J.S.; Li, Wu-Jeng, 1993, "Identification and Active Disturbance Rejection for the JPL Phase B Test Bed", https://hdl.handle.net/2014/34990, Albuquerque, New Mexico, USA, JPL Open Repository
Active disturbance rejection to minimize optical path length error is illustrated by experimental results from the JPL Phase B Test Bed, which incorporates an interferometric sensor and a controllable trolley mounted on a flexible truss structure. The controller actively isolates... |
Jan 30, 1993
Kuo, C-P.; Glaser, R.; Garba, J., 1993, "Coldfinger Motion Suppression Using a Ceramic Applique", https://hdl.handle.net/2014/34800, ['SPIE Conference', 'Albuquerque, New Mexico, USA'], JPL Open Repository
The development of a ceramic applique for the vibration suppression of a cryocooler coldfinger is a part of technology demonstration flight experiment. |
Jan 30, 1993
Fanson, J.; Ealey, M., 1993, "Articulating Fold Mirror for the Wide-Field/Planetary Camera II", https://hdl.handle.net/2014/34932, Albuquerque, New Mexico, USA, JPL Open Repository
The Articulating Fold Mirror (AFM) is a space qualified, ultraviolet compatible device that incorporates many advanced features including a highly lightweighted mirror and electrostrictive solid state actuators that provide precise and repeatable open loop performance. The design... |