NASA NTRS · 19930000735
Improved Nystrom Integrators
Abstract
New formulation for Nystrom integrators offers increased precision and speed of computation. Formulation takes advantage of capabilities of modern electronic computers. Independent and dependent variables and various partial and total derivatives expressed via compact tensor notation. In this approach, typical set of constraint equations derived in about 1 day. Solution of constraint equations speeded by SEARCH computer program. Is general-purpose optimization program, which maximizes or minimizes cost function defined by user. Used successfully, to make least-squares fit of about 4,000 equations in 12 unknowns.
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Lear, William M.. 1993-11-01. Improved Nystrom Integrators. https://ntrs.nasa.gov/citations/19930000735
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