

0.562 



1.445 



2.034 



2.229 





2.000 



1.391 



0.513 



-0.475 





-1.390 



-2.054 



-2.322 



-2.109 





-1.400 



-0.257 



1.188 



2.755 





4.238 



5.438 



6.189 



6.386 



FI = 



0.000 



0.000 



0.000 



0.000 



(32 values) 



0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 



c. Calling Statement: 



FFT (XR, 



XI, 5, 0). 







Output : 



1.000 



1.000 



1.500 



0.000 



a(n) coefficients 



0.000 



0.000 



0.000 



-0.000 



(32 values) 



-0.000 



-0.000 



-0.000 



-0.000 





-0.000 



-0.000 



-0.000 



-0.000 





-0.000 



-0.000 



-0.000 



-0.000 





-0.000 



-0.000 



-0.000 



-0.000 





-0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



1.500 



1.000 



b(n) coefficients 



0.000 



-0.300 



-0.700 



-0.000 



(32 values) 



-0.000 



-0.000 



-0.000 



-0.000 





-0.000 



-0.000 



-0.000 



-0.000 





-0.000 



-0.000 



-0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.000 



0.000 





0.000 



0.000 



0.700 



0.300 



At (time step) = 1 



second in 



above example 



• 





HFC Subroutine. 











2. 



This subroutine resets the spatial aliasing frequency cutoff to a higher 

 frequency than would be the case for normal incidence of waves to gage pair. 

 In the present version of this subroutine, it has been assumed that the maxi- 

 mum angle which the wave crests can make with the gage pair axis is 45° . The 

 spatial aliasing criteria are expressed in Figure 1, where for proper resolu- 

 tion of wave direction the following criteria must be met 



£cos [0(n) - 0] < j 



k(n) Jlcos [0(n) - 0] < k(n) 



26 



