-100 



10' 1 



^100 



10-' 



g 10-2- 



% 10-3 



lo-" 



s 



10-5 



10-6 



10- 



NORAAALLY DISTRIBUTED NOISE 



8 10 12 14 16 18 20 22 



DISTANCE (KILOMETERS) 



24 



10-' 10° 10' 



FREQUENCY (CYQES/KILOAAETER) 



10» 



Figure B-3 An example of normally distributed random noise in the same 

 format as Figure B-2. Notice the tendency of values to 

 cluster about the mean (normal distribution) and the large 

 scatter of amplitude estimates in the amplitude spectrum. 



141 



