The Total Electron Content (TE C) is the amount of free electrons along t he path of the electromagnetic wav e between each satellite and the receiver, given by
TEC= = ∫ N ds
where N is the electron density.
It is an important geophysical parameter, which has also appli cations for correcting navigation measurements for single frequency recei vers.
The TEC has been measured for decades using the Farad ay Rotation effect on a linear polarized propagating plane wave (Klobuchar, 1985 and 1996). Special transmitters in geostationary and non-geostationary satellites were used for this purpose. But today TEC measurements are mad e mostly using GPS data, , which can provi de at least 4 and up to maybe 9 TEC v alues within 1000 km from the receiving station sim ultaneously every 30 seconds (usual period).
Have a look at https://www.jstage.jst.go.jp/article/eps1998/54/1/54_1_63/_pdf
and the attachment.
Thanks for your reply Muhammad Ali
i know about the theory
i want MATLAB code for this
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