Performance of the Parkes 210-foot paraboloid at wavelengths from 6 to 75 cm.
Aperture efficiency of Parkes radio telescope reflector for decimeter and centimeter wavelengths obtained through celestial radio source
PERFORMANCE CHARACTERISTICS↗
SEARCH · Search NASA
Results for “Park”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Evaluation of infrared imagery applications to studies of surficial geology, Yellowstone Park
Infrared photography of surficial geology of Yellowstone Park
Pierce, K. L.↗
Geothermal studies - Yellowstone National Park /test site 11/, Wyoming
Summary report of diamond drilling in thermal areas of Yellowstone National Park, and method for determining heat flow in thermal areas
Fournier, R. O.↗
Use of planetary oblateness for parking-orbit alinement
Planetary gravitation and oblateness used for parking orbit alignment in Mars mission
Thibodeau, J. R., III↗
Geological Evaluation of Infrared Imagery, Eastern Part of Yellowstone National Park, Wyoming and Montana
Geological evaluation of infrared imagery of Yellowstone National Park to determine if rock and soil types, structures, and thermal springs can be identified
Smedes, H. W.↗
Structural performance of the Parkes 210-ft paraboloid.
Parkes paraboloid radio telescope structural performance, using rapid survey instrument to measure surface deformations for optimum focusing determination
Minnett, H. C.↗
Optimal transfer trajectories from earth parking orbit to various terminal conic constraints and modifications to the ROBOT computer program
Optimal transfer trajectories from earth parking orbit to various terminal conic constraints, and ROBOT computer program modifications
Bradford, R.↗
Orbit determination for lunar parking orbits using time-varying orbital elements
Orbit determination for lunar parking orbits using time varying orbital elements
Bullock, M. V.↗
Translunar, lunar parking orbit, and transearth procedures - C-prime mission
Mission C-prime translunar, lunar parking orbit, and transearth flight crew proceedures
Mosel, D. K.↗
Preliminary evaluation of radar imagery of Yellowstone Park, Wyoming
Evaluation of radar imagery of Yellowstone Park, Wyoming
Christiansen, R. L.↗
Digital computer terrain mapping from multispectral data, and evaluation of proposed Earth Resources Technology Satellite /ERTS/ data channels, Yellowstone National Park - Preliminary report
Digital computer processing of visible and reflective infrared scanner data for automatic computer mapping of Yellowstone National Park
Hoffer, R. M.↗
Geologic interpretation of a radar mosaic of Yellowstone National Park
Geologic mapping of Yellowstone National Park area by interpretation of radar imagery
Prostka, H. J.↗
Geologic evaluation of anomalies between like-polarized and cross-polarized K-band side-looking radar imagery of Yellowstone National Park, 1965
Geologic evaluation of anomalies between like-polarized and cross-polarized K-band side-looking radar imagery of Yellowstone National Park
Richmond, G. M.↗
Minimum delta-V, three-impulse, non-coplanar transfer from a circular parking orbit onto an asymptotic velocity vector for small declination angles - An approach to the trans-Mars launch window problem
Trans-Mars launch window problem, discussing minimum delta-V three-impulse noncoplanar transfer from circular parking orbit onto asymptotic velocity vector
Bean, W. C.↗
Saturn S-IVB continuous vent system for propellant control during parking orbit
Saturn S-4B continuous vent system for propellant tanks during parking orbit to prevent excessive pressure, requiring liquid settling with auxiliary ullaging rockets
Neher, R. T.↗
Preprocessing of multispectral data and simulation of ERTS data channels to make computer terrain maps of a Yellowstone National Park test site
The possibility of improving the accuracy of terrain classification by preprocessing spectral data was investigated. Terrain maps were made using the following techniques: 1) preprocessing by scan angle function transformation, using the computer-selected best set of three channels; and 2) preprocessing by ratio transformation, using the specified ERTS data channels, simulated by fitting the spectral response of each of the 12 data channels to the ERTS channels by a set of weighting coefficients. By using a simple technique during printout, the maps were produced in color. The normalized scan angle function transformation resulted in the most accurate classification. The best ratio transformation for the Yellowstone Park data was the ratio of each channel to the sum of all channels. A supervised training program involving maximum likelihood decision for selecting the best spectrometer channels and similar techniques for digitizing the data of the analog magnetic tapes were used. Cloud shadows were recognized in addition to eight classes of terrain. Preprocessing of data resulted in more accurate maps, required fewer training areas (hence less preparation and computer time), and enabled much of the area formerly classified as shadow to be reclassified according to actual terrain type.
Smedes, H. W.↗
Geologic studies of Yellowstone National Park imagery using an electronic image enhancement system
The image enhancement system is described, as well as the kinds of enhancement attained. Results were obtained from various kinds of remote sensing imagery (mainly black and white multiband, color, color infrared, thermal infrared, and side-looking K-band radar) of parts of Yellowstone National Park. Possible additional fields of application of these techniques are considered.
Smedes, H. W.↗
Terrain Classification Maps of Yellowstone National Park
Terrain classification maps of Yellowstone National Park
Thomson, F. J.↗