Physics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.3027w&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, March 10, 1985, p. 3027-3036.
Physics
26
Altimeters, Celestial Geodesy, Geopotential, Gravitational Effects, Orbit Perturbation, Satellite Orbits, Error Analysis, Harmonic Analysis, Radial Distribution, Seasat Satellites
Scientific paper
The linear perturbations of the radius of a satellite orbit due to the geopotential are derived. From these, estimates are made of the radial orbit error due just to geopotential errors from current models employing only conventional satellite-tracking data. The estimates show that about an order of magnitude improvement in the satellite geopotential will be necessary to utilize the full accuracy of independent satellite altimeter measurements. The linear perturbations are used to show that: (1) a substantial improvement in the low-degree geopotential is possible from the indirect use of Seasat altimetry at track crossovers, and (2) a separation of 'permanent' sea topography and geoid may be possible from direct use of the heights along the track.
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