Compensation of Interpolation by Linear Filter.
Abstract
A method for counteracting the damping effects of interpolation makes use of simple symmetric linear filters. Specifically for use in numerical integrations involving multiple mappings of a grid network on a sphere, it has been designed to take advantage of the relative simplicity of map representations in numerical integrations and at the same time avoid the instability that is due to incompatible solutions in the overlap region. Whether or not the method will actually succeed in this purpose can only be determined from specific experiments. The method makes use of linear filtering to produce a maximum restoration of damped amplitude, and may therefore also be useful in generating initial grid point data from irregularly spaced station data as part of some general objective analysis procedure. The procedures are general and may find application in such diverse problems as that of incorporating nonsynoptic data into an objective analysis procedure or in limited-area nesting problems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 28, 1971
- Accession Number
- AD0721185
Entities
People
- Ralph Shapiro
Organizations
- Air Force Cambridge Research Laboratories