Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Edward J. Christensen"'
Publikováno v:
Geophysical Research Letters. 21:2175-2178
We have compared Global Positioning System (GPS)-based dynamic and reduced-dynamic TOPEX/Poseidon orbits over three 10-day repeat cycles of the ground-track. The results suggest that the prelaunch joint gravity model (JGM-1) introduces geographically
Autor:
Phillippe Escudier, Charles A. Yamarone, Michel Dorrer, Edward J. Christensen, Lee-Lueng Fu, Michel Lefebvre, Y. Menard
Publikováno v:
Journal of Geophysical Research. 99:24369
TOPEX/POSEIDON is the first space mission specifically designed and conducted for studying the circulation of the world's oceans. A state-of-the-art radar altimetry system is used to measure the precise height of sea level, from which information on
Autor:
G. H. Purcell, R. Kolenkiewicz, R. A. Norman, Michael E. Parke, R. S. Nerem, S. K. Gill, C. S. Morris, C. K. Shum, Edward J. Christensen, Brian Wilson, B. G. Williams, Byron D. Tapley, S. J. Keihm, George H. Born, Bruce J. Haines
Publikováno v:
Journal of Geophysical Research. 99:24465
We present estimates for the mean bias of the TOPEX/POSEIDON NASA altimeter (ALT) and the Centre National d'Etudes Spatiales altimeter (SSALT) using in-situ data gathered at Platform Harvest during the first 36 cycles of the mission. Data for 21 over
Autor:
Michael E. Parke, Kevin W. Key, Penina Axelrad, Daniel G. Kubitschek, Edward J. Christensen, Kenn Gold, James R. Johnson, George H. Born
Publikováno v:
Journal of Geophysical Research. 99:24517
The use of a spar buoy equipped with a Global Positioning System (GPS) antenna to calibrate the height measurement of the TOPEX radar altimeter is described. In order to determine the height of the GPS antenna phase center above the ocean surface, th
Autor:
W. H. Michael, Edward J. Christensen, B. L. Seidel, Andrew Wallio, Mario D. Grossi, David L. Farless, Jitendra Mehta, G. Fjeldbo, Donald Sweetnam, J. P. Brenkle
Publikováno v:
Journal of Geophysical Research. 82:4317-4324
Radio occultation measurements were made at approximately 50 locations on Mars with the Viking Orbiter 1 S (2.3 GHz) and X (8.4 GHz) band tracking links during October 1976. The measurements have been used to study the topography and atmosphere of Ma
Autor:
Edward J . Christensen, B. G. Williams
Publikováno v:
Journal of Guidance and Control. 2:179-183
Viking-1 and Viking-2 Doppler tracking data taken during orbit phases characterized by 1500 km subperiapse altitudes have provided a basis for a determination of the Martian gravity field. Navigation results show that the linear combination of short-
Autor:
J. Frank Jordan, Sun K. Wong, Philip A. Laing, Irwin I. Shapiro, Edward J. Christensen, Robert D. Reasenberg, William L. Sjogren, G. H. Born, Gary L. Slater, Jack Lorell, P. B. Esposito
Publikováno v:
Icarus. 18:304-316
Further reduction of Doppler tracking data from Mariner 9 confirms our earlier conclusion that the gravity field of Mars is considerably rougher than the fields of either the earth or the moon. The largest positive gravity anomaly uncovered is in the
Publikováno v:
Oceanography from Space ISBN: 9781461333173
The sea-surface microwave emissivity is derived using SMMR brightness temperatures and SASS inferred friction velocities for three North Pacific SEASAT passes. The results show the emissivity increasing linearly with friction velocity with no obvious
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef23bbdb92704dfb9c6d187d6444903a
https://doi.org/10.1007/978-1-4613-3315-9_85
https://doi.org/10.1007/978-1-4613-3315-9_85
Autor:
Edward J. Christensen, Georges Balmino
Publikováno v:
Journal of Geophysical Research. 84:7943
Satellite geodesy techniques previously applied to artificial earth satellites have been extended to obtain a high-resolution gravity field for Mars. Two-way Doppler data collected by 10 Deep Space Network (DSN) stations during Mariner 9 and Viking 1
Autor:
Edward J. Christensen
Publikováno v:
Journal of Geophysical Research: Solid Earth. 86:6383-6383