Finite Differencing in Solvers

Development related to the GMAT core and GUI

Finite Differencing in Solvers

Postby shughes » Fri Jun 13, 2008 4:28 pm


How does GMAT handle central differencing for solvers. If I have a vary command

Vary DC(MyVar = 1, {Perturbation = .1})

what equation does it use for the derivative approximation? Asked another way, for the first iteration, does GMAT perturb by the full amount (.1) on either side of 1, or does it do something else like perturb by .05 in on either side of 1?

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