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42,161 to 42,170 of 42,449 Results
An Investigation of the Interrelationships Between Linear and NonLinear Polarizabilities and Bond Length Alternation on Connugated Organic Molecules
Jan 1, 1993
Gorman, C. B.; Marder, S. R., 1993, "An Investigation of the Interrelationships Between Linear and NonLinear Polarizabilities and Bond Length Alternation on Connugated Organic Molecules", https://hdl.handle.net/2014/36570, UNKNOWN, JPL Open Repository
A computational method was devised to explore the relationship between charge separation, geometry, molecular dipole moment, polarizability, and hyperpolarizabilities in comjugated organic molecules. It is shown that bond length alternation (the average difference in length betwe...
The Application of Massively Parallel Computation to Integral Equation Models of Electromagnetic Scattering
Jan 1, 1993
Cwik, T.; Geijn, R. van de; Patterson, J., 1993, "The Application of Massively Parallel Computation to Integral Equation Models of Electromagnetic Scattering", https://hdl.handle.net/2014/36559, Journal Optical Society A, JPL Open Repository
Integral equation methods are widely used in the analysis and design of electromagnetic systems.
Mars Observer System Thermal Vacuum Test and Its Cost Saving Approach
Jan 1, 1993
James Fu; Timothy Larson, 1993, "Mars Observer System Thermal Vacuum Test and Its Cost Saving Approach", https://hdl.handle.net/2014/36496, ['14th Aerospace Testing Seminar: Spacecraft Testing & Cost Saving', 'Manhattan Beach, CA'], JPL Open Repository
The Mars Observer spacecraft underwent a successful system thermal vacuum (STV) test in March 1992, meeting all five primary objectives. This paper presents a description of the spacecraft and the test configuration, as well as a discussion of the test results and how the test ob...
Passive Microwave Remote Sensing for Land Resources
Jan 1, 1993
Njoku, E. G., 1993, "Passive Microwave Remote Sensing for Land Resources", https://hdl.handle.net/2014/34979, UNKNOWN, JPL Open Repository
Spaceborne microwave radiometry is an important technique for obtaining global estimates of parameters important to Earth's hydrologic cycle, land resources, environmental monitoring, and climate. They key physical processes involved in these applications are the land-atmosphere...
The Origin and Evolution of the Deep Space Network
Jan 1, 1993
Waff, C., 1993, "The Origin and Evolution of the Deep Space Network", https://hdl.handle.net/2014/34915, JPL Open Repository
This paper describes the origin and the evolution of NASA's Deep Space Network from 1958 through the late 1970s.
High-Dynamic Range Fiberoptic Links for Antenna Remoting Applications
Jan 1, 1993
Gee, C. M.; Chen, T. R.; Chen, P. C.; Paslaski, J.; Lau, K. Y.; Logan, R. T.; Calhoun, M. D.; Lutes, G., 1993, "High-Dynamic Range Fiberoptic Links for Antenna Remoting Applications", https://hdl.handle.net/2014/35062, UNKNOWN, JPL Open Repository
In recent years, the performance and cost effectiveness of analog fiberoptic communication systems have improved so that many applications including antenna remoting which requires high dynamic range can now benefit from the many advantages of fiber optics.
Laboratory Studies of Heterogeneous Chemistry Important in the Atmosphere
Jan 1, 1993
Leu, M-T.; Keyser, L. F.; Chu, L. T.; Timonen, R.; Tso, T-L., 1993, "Laboratory Studies of Heterogeneous Chemistry Important in the Atmosphere", https://hdl.handle.net/2014/35196, Anaheim, California, USA, JPL Open Repository
No abstract provided
The Effects of Correlated Noise in Phased-Array Observations of Radio Sources
Jan 1, 1993
Dewey, R., 1993, "The Effects of Correlated Noise in Phased-Array Observations of Radio Sources", https://hdl.handle.net/2014/35944, UNKNOWN, JPL Open Repository
Arrays of radio telescopes are now routinely used to provide increased signal-to-noise when obseving faint point sources. However, calculation of the achievable sensitivity is complicated if there are sources in the field of view other than the target source. These additional sou...
Vertical Ocean Loading Amplitudes From VLBI Measurements
Jan 1, 1993
Sovers, O., 1993, "Vertical Ocean Loading Amplitudes From VLBI Measurements", https://hdl.handle.net/2014/35464, UNKNOWN, JPL Open Repository
Vertical ocean loading amplitudes are determined by analysis of IRIS geodetic VLBI data. Vertical ocean loading amplitudes can thus be inferred from VLBI data at a level which improves the overall model, but detailed assessment of individual tidal components is presently obscured...
The GPS Flight Experiment on TOPEX/Poseidon
Jan 1, 1993
Melbourne, W. G.; Tapley, B. D.; Yunck, T. P., 1993, "The GPS Flight Experiment on TOPEX/Poseidon", https://hdl.handle.net/2014/35607, UNKNOWN, JPL Open Repository
After a decade of preparation, the GPS precise orbit determinatin (POD) experiment on TOPEX/Poseidon is now yielding definite results.
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