Error Analyses of Resonant Orbits for Geodesy

Details Error Analyses of Resonant Orbits for Geodesy Error Analyses of Resonant Orbits for Geodesy

Jun 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969cemec...1..252d&link_type=abstract

Celestial Mechanics, Volume 1, Issue 2, pp.252-270

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Scientific paper

An error analysis of resonant orbits for geodesy indicates that attempts to use resonance to recover high order geopotential coefficients may be seriously hampered by errors in the geopotential. This effect, plus the very high correlations (up to .99) of the resonant coefficients with each other and the orbital period in single satellite solutions, makesindividual resonant orbits of limited value for geodesy. Multiple-satellite, single-plane solutions are only a slight improvement over the single satellite case. Accurate determination of high order coefficients from low altitude resonant satellites requires multiple orbit planes and small drift-periods to reduce correlations and effects of errors of non-resonant geopotential terms. Also, the effects of gravity model errors on low-altitude resonant satellites make the use of tracking arcs exceeding two to three weeks of doubtful validity. Because high-altitude resonant orbits are less affected by non-resonant terms in the geopotential, much longer tracking arcs can be used for them.

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