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Converting Received Power to Transmitted Power
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One step needed in the comparison of model estimation to real data is that of the path traveled by the signal. In other terms, the received power is a function of the transmitted power, and the path that it traveled. In order to account for this factor, the power received at the CGS is converted to power transmitted by the instrument, or in reality, the gain of the instrument antenna. It is by comparing the model gain to the real, converted gain, that an error estimate is made.
In order to accout for the traveled path, several factors are included such as range loss, dispersion, polarization loss, and atmospheric loss.
The atmospheric loss is between 0.35 and 0.40 dB depending upon polarization. The range loss is found by the factor 4*pi*range^2, where range is given in meters.
