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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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Crustal motions in Alaska are computed by calculating the finite element solution for an elastic spherical shell problem. Very long baseline interferometry and geologic data are used and seem to be in rough agreement.
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This year we have introduced several modeling improvements, including estimating a parametric model for the mearly-diurnal and nearly-semidiurnal tidal frequency variations of UTI and polar motion, and estimating site velocities.
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We develop astronomical images of quasars using international radio interferometry.
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Very long baseline interferometry /VLB1/ one-bit instrumentation using videotape recorders in geodetic and geophysical measurements
Very long baseline interferometry of radio emissions from geostationary satellites, determining orbital elements and inertial position
Earth based radio tracking data types involving simultaneous or near simultaneous spacecraft tracking from widely separated tracking