41 to 50 of 6,770 Results
Aug 25, 2013
Content, D.; Aaron, K.; Alplanalp, L.; Anderson, K.; Capps, R.; Chang, Z.; Dooley, J.; Egerman, R.; Goullioud, R.; Klein, D.; Kruk, J.; Kuan, G.; Melton, M.; Ruffa, J.; Underhill, M.; Buren, D. Van, 2013, "Wide Field Infra-Red Survey Telescope (WFIRST) 2.4-meter mission study", https://hdl.handle.net/2014/44342, SPIE Optics and Photonics, San Diego, California, August 25-29, 2013, JPL Open Repository
The most recent study of the Wide Field Infrared Survey Telescope (WFIRST) mission is based on reuse of an existing 2.4m telescope. This study was commissioned by NASA to examine the potential science return and cost effectiveness of WFIRST by using this significantly larger aper... |
Mar 30, 2004
Goullioud, Renaud; Shen, Tsae-Pyng J.; Catanzarite, Joseph H., 2004, "Wide angle astrometric demonstration on the micro-arcsecond metrology testbed for the space interferometry mission.", https://hdl.handle.net/2014/38378, ICSO 2004 5th International Conference on Space Optics, Toulouse, France, March 30, 2004, JPL Open Repository
The Space Interferometry Mission (SIM) requires fringe measurements to the level of picometers in order to produce astrometric data at the micro-arc-second level. To be more specific, it is necessary to measure both the position of the starlight central fringe and the change in t... |
May 15, 2023
Ali Kolaini, 2023, "Why Workmanship Vibration Tests is Important to Prepare Flight Hardwar for launch", https://doi.org/10.48577/jpl.5JKMPH, Aerospace Testing Seminar (Los Angeles, CA) [May, 2023], JPL Open Repository
Recently, there has been a tendency during random vibration and sine vibration testing for spacecraft projects to eliminate or reduce minimum workmanship to levels low enough that the objective of performing an adequate workmanship screen during the test is defeated. The chief re... |
Jun 21, 2004
Milman, Mark H.; Regher, Martin; Shen, Janice TsaePyng, 2004, "White light modeling, algorithm development, and validation on the micro-arcsecond metrology testbed", https://hdl.handle.net/2014/38953, SPIE Astronomical Telescopes and Instrumentiation 2004, Glasgow, Scotland, June 21, 2004., JPL Open Repository
The Space Interferometry Mission (SIM), scheduled for launch in early 2010, is an optical interferometer that will perform narrow angle and global wide angle astrometry with unprecedented accuracy, providing differential position accuracies of 1uas, and 4uas global accuracies in... |
Jun 21, 2004
Milman, Mark H.; Regher, Martin; Shen, Tsae Pyng, 2004, "White light modeling, algorithm development, and validation on the Micro-Arcsecond Metrology Testbed", https://hdl.handle.net/2014/40756, SPIE Conference on Astronomical Telescopes and Instrumentation, Glasgow, Scotland, United Kingdom, June 21, 2004., JPL Open Repository
The Space Interferometry Mission (SIM) scheduled for launch in early 2010, is an optical interferometer that will perform narrow angle and global wide angle astrometry with unprecedented accuracy, providing differential position accuracies of 1uas, and 4uas global accuracies in p... |
May 5, 2011
Baumgartel, Lukas; Thompson, Rob; Strekalov, Dmitry; Grudinin, Ivan; Yu, Nan, 2011, "Whispering gallery mode resonators as optical reference cavities", https://hdl.handle.net/2014/43444, IEEE Joint International Frequency Control Symposium and European Frequency and Time Forum, San Francisco, California, May 2, 2011, JPL Open Repository
Highly stabilized lasers are an increasingly valuable tool for metrology. For many applications, however, existing Fabry Perot systems are too bulky and cumbersome. We are investigating the use of miniature monolithic whispering gallery mode resonators as reference cavities for l... |
Jun 22, 2004
Mahoney, Michael J., 2004, "Where is Tropopause?", https://hdl.handle.net/2014/39060, SOFIA Upper Deck Science Opportunities Workshop, Moffett Field, California, June 22-23, 2004., JPL Open Repository
Much of the earth science that is being proposed for the Stratospheric Observatory for Infrared Astronomy (SOFIA) Upper-Deck Research Facility (SURF) deals with issues related to the tropopause, which will be near SOFIA'S flight level at mid-latitudes. Interpreting in situ or rem... |
Jul 7, 2023
Adrien Maillard, 2023, "Where is my coverage? Using explainable automated scheduling to inform mission design of an Earth-observing constellation", https://doi.org/10.48577/jpl.UQTTBX, International Workshop on Planning and Scheduling for Space 2023, JPL Open Repository
The Surface Deformation and Change Mission Architec- ture Study (SDC) aims at designing the next synthetic aper- ture radar mission to measure geophysical properties of the Earth’s land surfaces, focusing on surface deformation and disruptive change. Multiple mission architecture... |
Mar 5, 2005
Jansma, Patti A. “Trisha”, 2005, "When management gets serious about managing software.", https://hdl.handle.net/2014/38981, IEEE Aerospace Conference, Big Sky, Montana, March 05-12, 2005., JPL Open Repository
This paper describes JPL’s approach to improving the management of software. It discusses the various products, services and training that were developed, describes the deployment approach used, and concludes with several “lessons learned” about changing how software is managed,... |
Jul 16, 2006
Wagstaff, Kiri L.; Basu, Sugato; Davidson, Ian, 2006, "When is constrained clustering beneficial, and why?", https://hdl.handle.net/2014/39933, National Conference on Aritficial Intelligence, Boston, Massachusetts, July 16-20, 2006., JPL Open Repository
Several researchers have shown that constraints can improve the results of a variety of clustering algorithms. However, there can be a large variation in this improvement, even for a fixed number of constraints for a given data set. We present the first attempt to provide insight... |
