Calibration of Interferometric SAR System Using Kinematic Ground GPS Measurements
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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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This study examines the spatial and temporal character of sea ice floe size distribution during summer melt, important variables for understanding the summer heat and mass budgets and the distribution of heat between the vertical and horizontal ice melt. Preliminary results are presented that indicate the gradual decrease in medium size floes (1-5 km diameters) and a fairly steady maintenance of floes smaller than 1 km in diameter over the primary summer months within the central pack ice region. The latter result indicates that smaller floes continue to melt or decay rather than accumulate, indicating the importance of dynamics in affecting ice melt.
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See document.
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The backscatter signature of sea ice in newly-opened leads frequently overlaps with that of older and thicker ice types.
We discuss the observed C- and L-band polarimetric signatures of thin lead ice in one Synthetic Aperture Radar image based on the expected ice properties and results from a scattering model.
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Evaluation based on standard TOPSAR product with 10m pixel spacing.
On-going processor research relating to interferometry.
Fully automatic processing has been proven feasible .... still seems room for improvements.
A stereo processing system has been implemented at JPL using a Pacific Parallel Research 16-node transputer architecture.
This paper discusses the small perturbation model (SPM) used to express backscattering coefficients of the rough surface.
Monitoring Freeze-thaw transitions of the soil and vegetation in high latitude terestrial ecosystems is useful for determining the length of the growing season, and for monitoring potential damage to living plants due to frezing and frost drought.