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Browsing JPL TRS 1992+ by Issue Date

Now showing items 21-40 of 36323

Planetary Radar Astronomy

Ostro, S. J. (1992-03)

Planetary radar astronomy is the study of Solar System entities by transmitting a radio signal toward the target and then receiving and analyzing the echo. This field of research has primarily involved observations with ...
Control of Micromachined Deformable Mirrors

Agronin, M. L.; Bartman, R.; Hadaegh, F. Y.; Kaiser, W.; Wang, P. K. C. (1992-05)

A micromachined deformable mirror with pixelated electrostatic actuators is proposed. The paper begins with a physical description of the proposed mirror. Then, a mathematical model in the form of a nonlinear partial ...
Microspacecraft Attitude Control

Sevaston, G. E. (1992-05)
Report of the Microspacecraft Panel

Jones, Ross M.; Connolly, Denis (1992-05)

These findings and recommendations are based solely on the material presented during the Microtechnologies and Applications to Space Systems Workshop, 5/27 and 28/92, and the personal knowledge and judgment of the panel ...
Future Trends in Small Missions and the Need for Microtechnology

Elachi, Charles (1992-05)
Micro-Sensors for in-situ Meteorological Measurements

Crisp, David; Kaiser, William J.; Vanzandt, Thomas R. (1992-05)

Improved in-situ meteorological measurements are needed for monitoring the weather and climate of the terrestrial and martian atmospheres. We have initiated a program to assess the feasibility and utility of micro-sensors ...
Micro-Guidance and Control Synthesis: New Components, Architectures, and Capabilities

Mettler, E.; Hadaegh, F. (1992-05)

This paper presents an advocacy for the development of micro-guidance, navigation, and control that would involve contributions and coordinated activities of NASA, industry, and academia.
Micro Guidance and Control Panel Recommendations

DiBattista, J.; Hadaegh, F.; Keckler, C. (1992-05)

None given. This presentation was made to help develop new mini/micro guidance and control system architectures and components that meet the needs of future space systems.
(abstract) A Broad-Band Microseismometer for Planetary Applications

Banerdt, W.B.; VanZandt, T.; Kaiser, W.J.; Kenny, T.W. (1992-05)

There has recently been renewed interest in the development of instrumentation for making measurements on the surface of Mars. This is due to the Mars Environmental Survey (MESUR) Mission, for which approximately 16 small, ...
Microspacecraft: A Concept

Jones, R. M. (1992-05)

There is need for smaller, faster, more frequent space science missions. Smaller spacecraft may enable such missions. Technology has been developed by the United States' Department of Defense and other government agencies ...
Abstract, Foreword, Summary Report for Workshop Proceedings: Microtechnology and Applications to Space Systems

Wilson, B.A. (1992-05-27)

During FY'92, the NASA Code RS System Analysis RTOP funded a study to evaluate the potential impact of emerging microtechnologies on future space missions. As part of this study, a workshop,
Micro-Guidance & Control Technology Overview

Kissel, Glen J.; Hadaegh, Fred Y. (1992-05-27)

This paper gives an overview of micro-guidance and control technologies and in the process previews of some of the technologies, users and system issues presented in the guidance and control session at the workshop.
Series-Fed-Type Linear Arrays of Dipole and Slot Elements Transversely Coupled to a Microstrip Line

Gulintseff, A. N. (1992-06-27)

Printed dipole elements and their complement, liner slots, are elementary radiators that have found use in low-profile antenna arrays.
Complex Reconfigurable Free-spce Optical Interconnections Via Phase CGH in Spatial Light Modulators

Liu, H-K.; Zhou, S. (1992-07)

The non-interfering free-space optical interconnections possess the advantages of higher throughput and less delay time compared to electronic interconnections.
The Southern Hemisphere VLBI Experiment (SHEVE)

Preston, R. A.; Jauncey, D. L.; King, E. A.; Jones, D. L.; Ferris, R. H.; Hoard, D. W.; Campbell-Wilson, D.; Gwinn, C. R.; Jones, P. A.; Lovell, J. E. J.; Norris, R. P.; John, M. E. St.; Preston, R. A.; Meier, D. L.; Murphy, D. W.; Costa, M. E.; Amy, S. W.; Clay, R. W.; Hamilton, P. A.; Kemball, A. J.; McAdam, W. B.; Perlman, E.; Skjerve, L.; White, G. L.; Reynolds, J. E.; Tzioumis, A. K.; Nicolson, G. D.; Gough, R. G.; Blair, D. G.; Edwards, P.; Johnson, B.; Lobdell, E. T.; McCulloch, P. M.; Sinclair, M. W.; Wark, R. M. (1992-07)

Radio telescopes at eight sites in Astralia and one in South Africa operate as a VLBI array during several periods each year.
Multi-Epoch 8.4GHz VLBI Observations of the Nucleus of Centaurus A

Meier, David L. (1992-07-20)

We present the results of several 8.4 GHz VLBI observations of the nucleus of Centaurus A. We fing that the source possesses a classical core-jet structure with the inner portion of the jet expanding at a proper motion ...
Preliminary Space VLBI Requirements for Observing Time on Ground Radio Telescopes

Meier, David L.; Murphy, David W.; Preston, Robert A. (1992-07-20)

An initial estimate has been made of the observing time required on ground radio telescopes by the space VLBI missions Radioastron and VSOP. Typical science programs have been adopted for both missions.
2.3 GHz VLBI Images of Southern Hemisphere Radio Galaxies and Quasars

Murphy, David W. (1992-07-20)
Space Station Freedom Current Status and Prospects

Phillips, R. W. (1992-08)
Some Roles for NASA in Developing and Institutionalizing Ecological Knowledge

Phillips, R. W. (1992-08)

Browsing JPL TRS 1992+ by Issue Date

Browsing JPL TRS 1992+ by Issue Date

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