Electron Density Coefficients File
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The Electron Density Coefficients data file (electron_density.dat) contains the ionospheric refraction generalized coefficients of the spherical harmonic expansions used in the computation of the maximum electron density and its associated altitude.
The maximum electron density and its associated altitude are used in the orbit determination process to correct the range, range rate and elevation measurements for the effects of atmospheric refraction.
Note: This file is not time dependent. It is not updated with each FreeFlyer release.
The file contains a series of records, each 30780 bytes long:
The format of the Electron Density Coefficients file is shown below.