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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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Theoretical curves of backscattering cross sections of rough surfaces for polarization states using statistical models
Physical optics and other approximations examined for improving and extending theory of electromagnetic backscattering from rough surfaces
Approximation solution to integral expressions of radar backscatter from distant rough surfaces for lunar surface property determination
Relationship between photometric data and geometry of backscattering surfaces of moon
High altitude atmospheric density measurements using X-ray or gamma ray backscatter and rocket sounding techniques
Ruby laser optical radar detection of upper atmospheric backscattering
HF backscattering by plane electromagnetic wave incident on imperfectly conducting sphere covered with concentric layers of different materials, noting refractive index value
Depolarization of electromagnetic waves backscattered from rough surface boundary
Optical radar detection of backscatter from upper atmosphere
Backscatter of electromagnetic waves from rough surface
Kirchhoff approximation used to calculate backscatter of ultrasonic waves from rough layer
Gamma ray backscatter principles for measurement of atmospheric density, using test results from altitude chambers in balloon and sounding rocket payloads
Volume backscattering functions and optical extinction coefficients for visible and IR RADIATION and selected cloud models
80 km atmospheric backscattering enhancement detected by optical radar
Vector field theory of time dependent backscatter from distant slightly rough sphere for pulsed and sinusoidally steady state sources
The lidar was commissioned with a charter to provide range-resolved absolute backscatter profiles throughout the troposphere and lower stratosphere.
To invesigate effects on polarimetric backscatter of sea ice grown under diurnal cycling conditions, we carried out an experiment inJanuary 1994 at the outdoor Geophysical Research Facility in the Cold Regions Research and Engineering Laboratory.
In terrain with relief variations radar signals are distorted due to the projection of the scene topography into the slant range-Doppler plane. The effect of these variations is to change the physical size of the scattering area, leading to errors in the radar backscatter values and incidence angle. For this reason the local incidence angle, derived form sensor position and Digital Elevation Model (DEM) data must always be considered.