

It 0,1 la j.olnta for analysia, 



r..anpllii(: Intorval 



H frc'i. huidc to block -avavuge 



.-itmrir.phin-lt: prcnsurc 

 :-.i-,-\iialor spool fie gravity 

 IiIT, critical dimensions 









V 















RAW ;A'i'A. 





;".i;a;i jjata: i. 

 3. 



^4. 



Calculale rooord rutiari 

 and atandc\rd deviation 

 Truncate unreasonable 

 values 



he-calculate record 

 mean 4 subtract from 

 slf:nals in record 

 Convert to psi or psld 



















' 



' 













REVERSE SIGNS 





h;ti(<a'1'e 

 inst. tilt 

 kiiom diff. 



PhiSiiL'RE KEAN. 





CALC. DEPTH 



AND TIDE FHOM 



ABS. PRESSURE 



MEAN. 





C 



F dPl i (iP2 









CALCUUTE PRESSURE 

 RESPONSE FimCTIon (K ) 



AND WAVOJUMBER (k)' 

 TOR EACH FREQUENCY BAJ.D 



DIVIDE EACH CHANNEL'S 



FOURIER COEFFICIQ.TS 



BY Kp k SEAWATER 



SPECIFIC GRAVITY 



FFT 



FJ^CH 



RECORD 



CREATE 



POWER 



r-PFCTRA 



CREATE 



CURVATURE TKRM 



RECORD 



CAU:UIATE 



SICNIKICAOT 



WAVE KEICOT 



FROM ABS. POWER 



TERMS 



CEIIERATE 

 DIRECT kiNAL 



FOURIER 

 OOEFFICIE?iTS 



CAU;rUTE 



EFFETITVE 



TERIi'T rVP 



F.^CH ciut;:;Fi. 



ESTIMATE 



DIREC.ION ISING 



DIfT. GAUGFS 



CNU 



BIf>CK -AVERAGE 



DIRBCTIONAI. 



COEFFICIEm'S, 



POWER SPECTRA. 



* OTHER DIRXN'I 



ESTMATFE . 



IDH.TIE-Y 

 FREQUENCY 

 PAKL6 OF • 

 HIGHEST D;ERCY 





IJE\'EU^P THE 



•jIRECTIONAL-FREy. 



SPECTRUM FOR 



HIGHEST EHERGY 



BAN IS 





1. hocord date and time 

 •'. TntetcriLy of i-aw dat« 

 3. Tido ! 



U. Po.islhle In.°;trument tiH 

 'j. Slcrniiicant Wave Hoiiht 

 6. FJTcctlvo Period j 

 V. Highcct Etior»?y Bands ] 

 i) relative ragnitude 

 ii) directional spectrtun peak 



FIGURE IV-2: Flow chart of DPG analysis program. 



