41,601 to 41,610 of 42,018 Results
Feb 6, 1993
Needels, L.; Briggs, H., 1993, "Multidisciplinary Analysis of Segmented Reflector Telescope", https://hdl.handle.net/2014/34860, ['American Astronautical Society', 'Keystone, Colorado, USA'], JPL Open Repository
This paper is a summary of the work presented in the video tape demonstrating the integrated modeling capabilities that exist in an analytical tool being developed at JPL called IMOS (Integrated Modeling of Advanced Optical Systems). |
Feb 6, 1993
Hackney, J.; Bernard, D.; Rasmussen, R., 1993, "The Cassini Spacecraft: Object Oriented Flight Control Software", https://hdl.handle.net/2014/34861, Keystone, Colorado, USA, JPL Open Repository
The Cassini AACS object-oriented Flight Software is depicted in increasing levels of detail using a Context Diagram, Architecture Diagrams, an Object Diagram for each object, and a Statechart for each object. The detail contained in the diagrams is enhanced and refined during the... |
Feb 2, 1993
Lin, T.; Park, J.; George, T.; Jones, E. W.; Fathauer, R. W.; Maserjian, J., 1993, "Long-Wavelength PtSi Infrared Detectors Fabricated by Incorporating a P+ Doping Spike Grown by Molecular Beam Epitaxy", https://hdl.handle.net/2014/35030, Applied Physics Letters, JPL Open Repository
By incorporating a 1-nm-thick p+ doping spike at the PtSi/Si interface, we have successfullydemonstrated extended cutoff wavelengths of PtSi Schottky infrared detectors in the long wavelengthinfrared (LWIR) regime for the first time. The extended cutoff wavelengths resulted from... |
Feb 1, 1993
Brown, T. X.; Duong, T.; Eberhardt, S. P.; Tran, M. D.; Daud, T.; Thakoor, A. P., 1993, "Learning to Classify Map Data with Cascaded VLSI Neural Network Building Block Chips", https://hdl.handle.net/2014/34856, USA, JPL Open Repository
Paper maps are an important but unwieldy data format. To increase its utility, copious amounts of map data have been scanned into a digital map knowledge base. The next task in this knowledge base is to reduce this data to its underlying feature form suitable for analysis. |
Feb 1, 1993
Vaughan, David H.; Rodgers, Arthur H., 1993, "Development of the Second Generation Wide Field Planetary Camera for Hubble Space Telescope", https://hdl.handle.net/2014/34898, USA, JPL Open Repository
No abstract provided |
Feb 1, 1993
Fishbein, E. F.; Elson, L. S.; Froidevaux, L.; Manney, G. L.; Read, W. G.; Waters, J. W.; Zurek, R. W., 1993, "MLS Observations of Stratospheric Waves in Temparature and O3 During the 1992 Southern Winter", https://hdl.handle.net/2014/34966, USA, JPL Open Repository
The Microwave Limb Sounder observed waves in stratospheric temperature and 03 during the 1992 southern winter. |
Feb 1, 1993
Mendis, Sunetra K.; Pain, Bedabrata; Nixon, Robert H.; Fossum, Eric R., 1993, "Design of a Low-Light-Level Image Sensor with On-Chip Sigma-Delta Analog-to- Digital Conversion", https://hdl.handle.net/2014/34949, ['SPIE/IS&T: Electronic Imaging', 'San Jose, CA'], JPL Open Repository
The design and projected performance of a low-light-level active-pixel-sensor (APS) chip with semi-parallel analog-to-digital (A/D) conversion is presented. The individual elements have been fabricated and tested using MOSIS* 2 micrometer CMOS technology, although the integrated... |
Feb 1, 1993
Jamnejad, V.; Cwik, T.; Resch, G., 1993, "Cost and Reliability Study for a Large Array of Small Reflector Antennas for JPL/NASA Deep Space Network (DSN)", https://hdl.handle.net/2014/34761, ['IEEE Aerospace Applications Conference', 'Steamboat, Colorado'], JPL Open Repository
A study is performed to estimate the cost of an array of small aperture reflector antennas to be used instead or in conjunction with the current large reflector antennas of the JPL/NASA Deep Space Network (DSN), for servicing present and future NASA missions which involve smaller... |
Feb 1, 1993
O'Neil, W., 1993, "Galileo: Challenges Enroute to Jupiter", https://hdl.handle.net/2014/34825, ['American Astronautical Society - Guidance and Control', 'Keystone, Colorado, USA'], JPL Open Repository
The Galileo spacecraft is now on its three-year direct Earth-to-Jupiter transfer trajectory. |
Feb 1, 1993
Kahn, R. D.; Thurman, S. W.; Edwards, C. D., 1993, "In-Situ Radio-Metric Tracking to Support Navigation for Interplanetary Missions with Multiple Spacecraft", https://hdl.handle.net/2014/34931, Pasadena, California, USA, JPL Open Repository
Doppler and ranging measurements between spacecraft can be obtained only when the ratio of the total received signal power to noise power density at the receiving spacecraft is sufficiently large that reliable signal detection can be achieved within a reasonable time period. |