PORTER: SOFAR PROPAGATION OF WIDE-BAND SIGNALS TO LONG RANGES 



o 365 

 A 426 

 - 456 

 • 517 

 547 

 o 636 

 A 696 



o 



o 







o 



_L 



X 



400 



300 



200 



3:^ 





100 



-1.0 -.80 



-.60 



.40 -.20X10 



-2 



Figure 6. ARRIVAL FREQUENCY VERSUS 

 FRACTIONAL ARRIVAL TIME 



644 



