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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Electromagnetic waves traveling through the ionosphere undergo a Faraday rotation of the polarization vector which modifies the polarization and phase characteristics of the electromagnetic signal.
Optical communications offer high data rate satellite to ground communications in a small, low
Optical communications offers high data rate satellite to ground communications in a small, low mass, and low power consumption package.
A new technique for measuring the coherence time of the ocean surface at radar wavelengths has been developed and tested.
In this paper, we will briefly describe the instrument characteristics, the evolution of the various radar modes, the instrument performance and improvement in the knowledge of the positioning and attitude of information of the radar.
Computer analysis of ERS-1 and RADARSAT ScanSAR narrow images of Great Lakes ice cover using a supervised classification technique indicates that different ice types in the ice cover can be identified and mapped and that wind speed and direction can have a strong influence on the backscatter from open water.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Design of experiments to determine effects of propagation phenomena on operation of multiaperture antenna array
Effect of frequency on communications capability, single antennas and arrays, and economic balance between ground station and spacecraft development
Strict integration of equations dealing with boundary layer used to solve problem of axisymmetrical jets of incompressible fluid flowing into coaxial uniform flow of same fluid
Elasticity moment theory and stress concentrations for plane weakened by two circular holes
Input admittance of rectangular waveguide antenna radiating into inhomogenous lossy plasma slab and dielectric constant variations
Mutual coupling between TEM and TE 01 parallel- plate waveguides calculated, using wedge diffraction techniques