95 
yr(t) 
Figure 5: Shape of yj(t) as a Function of Parameter S T . Figure G: Measurements of A a , B a , W a , and t. P from an 
EMG Function. 
Figure 7: Smoothed Waveform Decomposed into Sur 
face and Bottom Reflections: (a) Moderate Depth, 
Weak and Broadened Bottom Reflection; (b) Very Shal 
low Water, Strong Bottom Reflection.