periodic perturbation

periodic perturbation

[¦pir·ē¦äd·ik pər·tər′bā·shən]
(astronomy)
Small deviations from the computed orbit of a planet or satellite; the deviations extend through cycles that generally do not exceed a century.
(mathematics)
A perturbation which is periodic as a function.
References in periodicals archive ?
Various applications are described in the literature (10-12) where periodic perturbation or symmetry breaking is introduced to cause chaotic particle trajectories in the deterministic flow patterns.
The interface of the guiding and metal layers has given a periodic perturbation similar to grating structure.
The classical approach to the problem uses convex analysis (Rockafellar, 1970) to derive first-order conditions for improvement around an a priori known steady-state solution to the optimization problem using periodic perturbation.
Laplace's periodic perturbation and the secular tidal interaction both dwarf the orbital energy loss we now attribute to general relativity.
The periodically inserted B zone (no-barrier zone) is regarded as the periodic perturbation in our modeling.
But because the comet--and the meteoroid stream all along its orbit--have made hundreds of trips around the Sun over tens of thousands of years, slight periodic perturbations can add up.
Its influence upon the satellite orbit is illuminated by Kozai, and the periodic perturbations of the first order and secular perturbations up to the second order are derived.