Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cemda..74..231k&link_type=abstract
Celestial Mechanics and Dynamical Astronomy, v. 74, Issue 4, p. 231-242 (1999).
Astronomy and Astrophysics
Astronomy
1
Satellite Altimetry, Satellite Dynamics, Radial Orbit Component/Accuracy, Crossovers, Combinations Of Single‐, And Dual‐, Satellite Crossovers, Combinations Of Single&Hyphen, And Dual&Hyphen
Scientific paper
We define combinations of dual- and single-satellite crossover differences to isolate both stationary orbit-geopotential and non-geopotential errors in altimetry data. Specifically two types of combinations are found useful. While no combination of differences can resolve the full radial error of single or paired satellites, an approximation of the mean or geographically correlated error of the generally dominant lower orbit of a pair can be found from one kind (substitutions). (The variable part of the error is always available from the single-satellite crossover differences.) A second useful combination type is found to yield no geopotential orbit error (zeros): uniquely, these can reveal errors in altimetry from imperfect media corrections as well as oceanographic changes in sealevel. The later circumstance is particularly important when the missions for a pair of satellites are disparate in time.
Klokocnik Jaroslav
Wagner Carl A.
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