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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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Comparisons and combinations of geodetic parameters from dynamic and geometric satellite solutions and Mariner flights
Geodetic satellites transfer between low ellipticity orbits by microthrust
Airborne Range and Orbit Determination as satellite geodetic survey instrument
Electromagnetic wave scattering by sea surfaces relevant to geodetic satellite altimeter design
Gravimetric and geodetic data correlation for satellite position prediction accuracy with error analysis
Graphical output from computer correlated gravimetric and satellite geodetic data
Review and bibliography on geodetic control of moon
Combining satellite altimetry observations and surface gravimetry in geodetic determinations over oceans
Signal processing techniques applicable to geodetic satellite altimeter program
Laser ranging systems used with retroreflecting satellites in geodetic and geophysical applications
Geodetic parameters estimated from satellite dynamic and geometric solutions and Mariner 4 and 5 missions
Laser altimeter-range finder techniques applied to geodetic measurements and mapping
Optical tracking data from geodetic satellites for deep space station coordinates
Accomplishments of geodetic satellite and earth survey programs during period July to December 1970
GEOS-C satellite project for geodetic and earth physics research
GEOS-C geodetic satellite purpose and equipment, discussing earth gravitational field study, radar altimeter possibility and tracking systems usefulness
The plate reduction method and other aspects of the world geodetic net are described. About one hundred stars are used as reference stars on the PAGEOS satellite plates obtained on 300mm f.1. and later 450mm f.1. Wild BC-4 cameras. The measurements are made manually now on diapositives since these can, according to experience, be measured with higher accuracy and are adjusted following a rigorous projective geometric model. The satellite images are analytically represented by a polynomial curve, of which seven fictitious points are regarded as the result from this plate. Some other aspects of the program are also discussed.
Current research is reported on precise and accurate descriptions of the earth's surface and gravitational field and on time variations of geophysical parameters. A new computer program was written in connection with the adjustment of the BC-4 worldwide geometric satellite triangulation net. The possibility that an increment to accuracy could be transferred from a super-control net to the basic geodetic (first-order triangulation) was investigated. Coordinates of the NA9 solution were computed and were transformed to the NAD datum, based on GEOS 1 observations. Normal equations from observational data of several different systems and constraint equations were added and a single solution was obtained for the combined systems. Transformation parameters with constraints were determined, and the impact of computers on surveying and mapping is discussed.