Implementation of an Mtf-Based Merging Algorithm for GONG Image Data
Abstract
The GONG project will use a weighted average based upon the modulation transfer function (MTF) in order to combine image data from a six-site network into a single time series of spherical harmonic coefficients for helioseismic analysis. Tests with artificially generated data and solar observations taken with the GONG instruments, including some observations taken with a part of the GONG instrument network in place, indicate that the MTF method for data merging can be successfully applied to helioseismic data.
- Publication:
-
Helioseismology
- Pub Date:
- June 1995
- Bibcode:
- 1995ESASP.376b.185W
- Keywords:
-
- Helioseismology: Methods of Reduction;
- Helioseismology: Image Processing