41,951 to 41,960 of 42,444 Results
Apr 1, 1993
Penzo, P. A., 1993, "A Mission Data Base for Low Cost Missions to Small Bodies in the Solar System", https://hdl.handle.net/2014/36033, Laurel, Maryland, USA, JPL Open Repository
No abstract provided |
Apr 1, 1993
Helin, Eleanor F., 1993, "Search for Near-Earth Object with Ground-Based Electro-Optical Deep Space Surveillance (GEODSS) Assets", https://hdl.handle.net/2014/35120, ['SDIO-Intrl. Seminar on Planetary Emergencies: Collision of an Asteroid or Comet with Earth', 'Erice, Sicily'], JPL Open Repository
This is a brief review of recent plans and current status of the adaptation of an Air Force wide field GEODSS telescope for the discovery and follow-up of Near-Earth Objects (NEOs). The proposed search program will focus on the discovery of natural objects and will proceed on a n... |
Apr 1, 1993
Schumaker, B.; Agronin, M.; Chen, G.-S.; Ledeboer, W.; Melody, J.; Noon, D.; Ulvestad, J., 1993, "Spacecraft and Mission Design for the Precision Optical INTerferometer in Space (POINTS)", https://hdl.handle.net/2014/35566, Orlando, Florida, USA, JPL Open Repository
This paper describes key features of the instrument, spacecraft, and mission design for the Precision Optical INTerferometer in Space (POINTS), which have evolved through studies at the Jet Propulsion Laboratory during the last few years. This paper complements others in theis vo... |
Apr 1, 1993
Fossum, Eric R.; Bartman, Randall K.; Eisenman, Allan R., 1993, "Application of the Active Pixel Sensor Concept to Guidance and Navigation", https://hdl.handle.net/2014/35310, ['SPIE: Guidance and Navigation', 'Orlando, FL'], JPL Open Repository
Charge-coupled devices (CCDs) have been used extensively in the past in star trackers and fine guidance systems. A new technology, the active pixel sensor, is a possible successor to CCDs. This technology potentially features the same sensitivity and performance of the CCD with a... |
Mar 30, 1993
Cheung, K.; Tong, K., 1993, "Proposed Data Compression Schemes for the Galileo S-Band Contingency Mission", https://hdl.handle.net/2014/36702, Snowbird, Utah, USA, JPL Open Repository
The Galileo spacecraft is currently on its way to Jupiter and its moons. Various options for improving Galileo's telemetry downlink performance are being evaluated. Communicaitons during the Jupiter encounters will be via one of two low gain antennas on an S-band carrier. |
Mar 30, 1993
Tong, Kar-Ming Cheung Kevin, 1993, "Proposed Data Compression Schemes for the Galileo S-Band Contigency Mission", https://hdl.handle.net/2014/34846, Snowbird, Utah, USA, JPL Open Repository
The Galileo spacecraft is currently on its way to Jupiter and its moons. In April 1991, the high gain antenna (HGA) failed to deploy as commanded. |
Mar 30, 1993
McGrath, W.; Febvre, P.; Javadi, H.; Salez, M.; Batelaan, P.; Frerking, M., 1993, "A Submillimeter Wave SIS Receiver for 547 GHz", https://hdl.handle.net/2014/34857, Los Angeles, California, USA, JPL Open Repository
The most sensitive heterodyne receivers used for millimeter wave and submillimeter wave radioastronomy employ superconductor-insulator-superconductor tunnel junctions as the nonlinear mixing element. |
Mar 30, 1993
Martin, D.; Choudhury, R. P.; Smith, A. V.; Ralsanen, M. A.; Frerking, S., 1993, "A Back-to-Back Barrier-N-N+(bbBNN) Diode Tripler at 200 GHz", https://hdl.handle.net/2014/34815, Los Angeles, California, USA, JPL Open Repository
No abstract provided |
Mar 29, 1993
Wasler, David, 1993, "(abstract) Electronic Packaging for Microspacecraft Applications", https://hdl.handle.net/2014/35536, Pasadena, CA, JPL Open Repository
The intent of this presentation is to give a brief look into the future of electronic packaging for microspacecraft applications. Advancements in electronic packaging technology areas have developed to the point where a system engineer's visions, concepts, and requirements for a... |
Mar 29, 1993
Halpern, D., 1993, "SSMI Wind Speed Measurements Over the Southern Hemisphere Oceans", https://hdl.handle.net/2014/36701, Hobart, Australia, JPL Open Repository
The January 1988 to December 1991 mean and monthly variations of surface wind speed over the Southern Hemisphere are described from SSMI measurements. |