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Gain in horizontal plane: if a horizontal antenna pattern is defined, then Image Removedthen  

Mathinline
body$g_{trx1\to trx2}^{H}=f_{trx1}^{H-pattern}\left( {{\theta }_{trx1\to trx2}} \right)$
 (Eq. 162)

Gain in vertical plane: if a vertical antenna pattern is defined, then: Image Removed 

Mathinline
body$g_{trx1\to trx2}^{V}=f_{trx1}^{V-pattern}\left( {{\phi }_{trx1\to trx2}} \right)$
 (Eq. 163)

When the two antenna patterns (horizontal and vertical) are selected, this means that the Horizontal horizontal and vertical planes are combined and SEAMCAT calculates the resulting antenna gain as a pseudo 3-D antenna gain . The calculation is based on the following approximation with a treshold value of 3 dB:

 

IF abs(Image Removed ) < 3 dB

Image Removed (in linear domain - not in dB)        (Eq. 158)

else

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multiplication in linear domain of the horizontal and vertical gains:


                                     

Mathinline
body${{g}_{trx1\to trx2}}=g_{trx1\to trx2}^{V}\times g_{trx1\to trx2}^{H}$
 (Eq. 164)