41,621 to 41,630 of 41,976 Results
Jan 8, 1993
Manning, R., 1993, "Low Cost Spacecraft Computers: Oxymoron or Future Trend?", https://hdl.handle.net/2014/34868, Keystone, Colorado, USA, JPL Open Repository
This paper describes how future trends in commercial computer technology will simplify (or hinder) selection of computer technology for spacecraft control applications, and what spacecraft electronic system designers can do to circumvent design constraints. |
Jan 5, 1993
Tanner, A.; Durden, S.; Im, E.; Li, F.; Ricketts, W.; Wilsons, W., 1993, "Pulse Compression with Very Low Sidelobes in an Airborne Rain Mapping Rada", https://hdl.handle.net/2014/35407, USA, JPL Open Repository
The pulse compression system for an airborne rain mapping rada is described. This system uses time domain weighting of the transmit pulse and is able to achive a pulse compression sidelobe level of -55 dB. This is significantly lower than any values previously reported in the ope... |
Jan 5, 1993
Weissman, Paul R., 1993, "(abstract) Scientific Objectivity and the Impact Hazard: Responsible Reporting Versus Crying Wolf", https://hdl.handle.net/2014/35402, Tucson, AZ, JPL Open Repository
Impacts of comets and asteroids on the Earth pose a real hazard, comparable in probability to other hazards which society deems worthy of concern. As such, it is prudent and reasonable to investigate and institute means for evaluation of the exact nature of the hazard and possibl... |
Jan 1, 1993
Hill, R.; Madore, B.; Freedman, W., 1993, "The Initial Mass Function for Massive Stars in the Magellanic Clouds. I. UBV Photometry and CM Diagrams for 14 OB Associations", https://hdl.handle.net/2014/34881, JPL Open Repository
This paper presents data used to construct color-magnitude diagrams for the purposes of investigating the massive-star content of the associations. |
Jan 1, 1993
Tsurutani, B., 1993, "Electromagnetic Waves with Frequencies Near the Local Proton Gryofrequency: ISEF-3 1 AU Observations", https://hdl.handle.net/2014/35612, UNKNOWN, JPL Open Repository
Low Frequency electromagnetic waves with periods near the local proton gyrofrequency have been detected near 1 AU by the magnetometer onboard ISEE-3. For these 1 AU waves two physical processes are possible: solar wind pickup of nuetral (interstellar?) particles and generation by... |
Jan 1, 1993
Plaut, J.; Arvidson, R., 1993, "Comparison of Goldstone and Magellan Radar Data in the Equatorial Plains of Venus", https://hdl.handle.net/2014/36009, JPL Open Repository
This paper describes the comparison of image data with derived parameters of the equatorial plains of Venus. |
Jan 1, 1993
Chahine, M. T., 1993, "Observation of Local Cloud and Moisture Feedbacks Associated with High Ocean and Desert Surface Temperatures", https://hdl.handle.net/2014/34988, n/a, JPL Open Repository
New data on clouds and moisture, made possible by reanalysis of weather satellite observations, show that the atmosphere reacts to warm ocean pools in the Western Pacific Ocean with increased moisture and cloudiness, suggesting a negative feedback limiting the rise in sea-surface... |
Jan 1, 1993
C.P. Jones, 1993, "Cassini Program Update", https://hdl.handle.net/2014/35926, ['AIAA', 'Space Programs and Technologies Conf.', 'Huntsville, AL'], JPL Open Repository
The Cassini Project is NASA's next mission the outer planets. Managed at the Jet Propulsion Laboratory and with the joint participation of the European Space Agency (ESA) and Agenzia Spatiale Italiana (ASI), Cassini will accomplish a comprehensive survey of the planet Saturn, Tit... |
Jan 1, 1993
Nagendra, C.L.; Lamb, James L., 1993, "Optical Properties of Semiconductor-Metal Composite Thin Films in the Infrared Region", https://hdl.handle.net/2014/36574, UNKNOWN, JPL Open Repository
Germanium:Silver (Ge:Ag) composite thin films having different concentrations of Ag, ranging from 7% to 40% have been prepared by dc co-sputtering of Ge an Ag and the films' surface morphology and optical properties have been characterized using transmission electron microscopy (... |
Jan 1, 1993
Mason, P. V.; Strayer, D.; Petrac, D.; Gutt, G.; Warfield, K., 1993, "The Control of Liquid Helium in Space by Electrostatics for the Satellite Test of Equizalence Principle Experiment", https://hdl.handle.net/2014/35571, UNKNOWN, JPL Open Repository
The equivalence of gravitational and inertial mass has been advanced to a basic postulate of the Einstein view of gravity. As such it deserves the most rigorous testing possible. |