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Free Space Pathloss Calculation and EME link budget
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DOWNLOAD !
EXCEL Spreadsheet
How do I calculate the effective range of my station in free space environment ? The solution is quite simple: Add all known parameters of your station, take the formula for free space path loss and don't forget the Boltzmann konstant.
I have added a Microsoft EXCEL spreadsheet EME System Sheet Download
, where you can enter or
modify all parameters and see immediately the effect on the result. This
spreadsheet works correct and takes care of all noise contibutions to your
system. Moon noise cannot be calculated.
Method
PL=32.45 + 20*log(Moondistance * 2) + 20*log(f) + Spherical loss from RADAR equ. + reflectivity loss
reflectivity loss : the moons' surface reflects only 7% to the earth RADAR Equation: the virtual moon represents only a fraction of the total sphere. Therefore an additional loss must be introduced. This is called in general the RADAR EQUATION
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