

-20 



1 



-\ — \ — 1 — 1 — 1 — 



1 1 1 





-40 



- 



/y^ 



^^ 





-60 



- 



/^(io) 



/^^ 



O) 



■D 



-80 





// x^ 



_ 



£ 



-100 





1 / y^ 





C3 

 EC 

 < 



/ 



// x;, 



- 





-120 



- / 



X 



- 





-140 



■// 



/ 



- 





-160 



1 Q n 



r 



1 1 1 1 1 



1 1 1 



8 10 12 14 



GRAZING ANGLE, deg 



16 18 20 



Figure 21. Phase comparison for linear K- and constant K models using 0.05 dB/m 

 attenuation for both models. 



68 



