dispersion error


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Related to dispersion error: Refraction error, variance error

dispersion error

[də′spər·zhən ‚er·ər]
(ordnance)
Chance variation in a series of shots even though firing conditions are kept as constant as possible.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

dispersion error

dispersion error
The distance between the point of aim and the point of impact.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
All the results validated the good stability and low dispersion error of the CIP-MOC method.
Dispersion Error. We compare the new method M968 to some already known methods; the methods chosen to be tested are as follows.
Their 3D RD-FD is identical to our face-centered SFBS LFE-FC-7 stencil which halves the dispersion error of the classical FD2-7 formula.
(ii) the dissipation and dispersion errors must both be small in a numerical scheme to yield efficient shock-capturing properties.
1(a), when [theta] = 0[degrees] ([k.sub.x] = k sin [theta] cos [PHI] = 0, [k.sub.y] = k sin [theta] sin [PHI] = 0, [k.sub.z] = k cos [theta] = k), along the z axis, the numerical dispersion error of the HIE-FDTD method is as large as that of the ADI-FDTD method.
Numerical experiments to compute numerical dispersion errors and convergence orders and to simulate a scattering problem are carried out.
It reduced the dispersion error to one half of the classical formula, while maintaining the same order (second-order) of accuracy.
However, similar to the ADI-FDTD method, the LOD-FDTD method also has a larger numerical dispersion error at larger time steps.
Since the partial differential equation considered is slightly dissipative and not dispersive, we aim to minimize the dispersion error of the scheme.
In the case of first derivatives we consider the dispersion error, the error in phase velocity, and the error in group velocity as objective functions.
It can be selected suitably to reduce the numerical dispersion error when the time step is large.