4-5] 



REFLECTION OF PLANE WAVES FROM THE GROUND 



185 



1234bb7 8u9 10 

 6° 



Fig. 4-9 Expanded Plot of Fig. 4-7 for Depression Angles Between and lO'^ 



182 



'l81 



180 



180 



160 



140 



120 



100 



80 



60 



40 



20 







12 3 4 5 6 7 



6° 



Fig. 4-10 Expanded Plot of Fig. 4-8 for Depression Angles Between 0° and 10° 



