Determination of Earth Satellite Orbits

10262020, 11:20 AM
Post: #1




Determination of Earth Satellite Orbits
" ABSTRACT
The formulas used in a computer program to fit earth satellite orbits to data are documented. The areas covered are (1) iterative method of determining maximum likelihood parameter estimates; (2) units and coordinate systems; (3) motion of the earth about its center of mass; (4) equations for earth satellite motion and partial derivatives of this motion with respect to parameters; (5) theoretical values and partial derivatives of theoretical values of ground based (radar or radio transponder, look angles, long baseline interferometer) and satellite based (radar, look angles) observables; and (6) numerical techniques such as numerical integration, polynomial interpolation and matrix inversion. Observations of the sun, moon, planets and stars are also discussed. " TN19725, M.E. Ash (M.I.T.), Lincoln Laboratory, 19 April 1972 emphasis mine BEST! SlideRule 

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