LAB I ANC A/HARPER: A THEORETICAL APPROACH TO THE PREDICTION OF SIGNAL 

 FLUCTUATIONS DUE TO ROUGH-SURFACE SCATTERING 



Dr. Labianca: Yes. 



Dr. Munk: Since the observed beam width of a sea is plus or 

 minus 50 degrees, it would be awfully nice if you could generalize 

 once more and allow for the (direction) of the waves. 



Dr. Labianca: I think we can do that. Right now we know how 

 to do that, at least for the sidebands, to first order. We haven't 

 figured out a way to generalize it for arbitrary direction to all 

 orders. 



Dr. P. W. Smith (Bolt, Beranek, and Newman, Inc.): Would you 

 guess that you would have symmetry of the Doppler spectrum if you 

 had plane wave incidence? Thinking of the image situation. 



Dr. Labianca: I don't know. I'll have to think about that. 



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