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Adjoint Sensitivity Analysis of Orbital Mechanics: Application to Computations of Observables' Partials with Respect to Harmonics of the Planetary Gravity FieldsAn approach is presented to the inversion of gravity fields based on evaluation of partials of observables with respect to gravity harmonics using the solution of adjoint problem of orbital dynamics of the spacecraft. Corresponding adjoint operator is derived directly from the linear operator of the linearized forward problem of orbital dynamics. The resulting adjoint problem is similar to the forward problem and can be solved by the same methods. For given highest degree N of gravity harmonics desired, this method involves integration of N adjoint solutions as compared to integration of N2 partials of the forward solution with respect to gravity harmonics in the conventional approach. Thus, for higher resolution gravity models, this approach becomes increasingly more effective in terms of computer resources as compared to the approach based on the solution of the forward problem of orbital dynamics.
Document ID
20080013228
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Ustinov, Eugene A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sunseri, Richard F.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
April 24, 2005
Subject Category
Space Sciences (General)
Meeting Information
Meeting: European Geosciences Union General Assembly
Location: Vienna
Country: Austria
Start Date: April 24, 2005
End Date: April 29, 2005
Distribution Limits
Public
Copyright
Other
Keywords
gravity fields
planetary

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