DENSITY IN DD 
DENSITY IN 0D 
GAIN (IN DD) 
PHASE (DEG, ) (X10) 
(a) Nonparametric method (max. lag = 50). 
POWER SPECTRAL DENSITY 
OUTPUT. 2 REL WAVE 
CROSS SPECTRAL DENSITY 
REAL PART 1 2 
Oly 
re 
DENSITY (X10!) 
4 
= 
| is 
a 
0.00 - \ 
MW 
| ak! V 
fw 
50.00 40° 
0.00 0.50 1.00 0.00 0.50 7.00 
FREQUENCY FREQUENCY 
CROSS SPECTRAL DENSITY 
BECTR 
POWER SPECTRAL DENSITY SNC 
INPUT- 1 WAVE 
bonny 
2 
DENSITY (X10!) 
° 
6 
8 
ys Oy 
-30.0 ' 
ES Pen ema 
[ / Ney | | 
aT eS 0.01 +41 
0.00 0.50 1.00 0.00 050 7.060 
FREQUENCY FREQUENCY 
POWER AND CROSS POWER SPECTRUM 
UENCY RESPONSE FUNCTION 
INPUT. 1 WAY 
OUTPUT: 2 REL WAVE 
N=225 
H=50 
-16.00 
00 
MULTI COHERE 
ie = 
8 8 
0.00 050 1.00 6.00 050 1.00 
FREQUENCY FREQUENCY 
FREQUENCY RESPONSE AND COHERENCY 
FREQUENCY RESPONSE FUNCTION 
INPUT: 1 WAVE 
OUTPUT: 2 REL WAVE 
N=225 
H=S50 
FREQUENCY RESPONSE ANALYSIS 
DENSITY IN OB 
DENSITY IN OB 
GAIN (IN DB) 
PHASE (DEG, ) (X10!) 
POWER SPECTRAL DENSITY 
OUTPUT. 2 REL WAVE 
REAL PART 1 2 
-20.00 i 002 + 
i 
= f | SS 
‘ | 
£0.00 = -001~ i 
FA | | 
Sapam | 
Aye 0.03 4 
000 050 100 000 050 100 
FREQUENCY FREQUENCY 
POWER SPECTRAL DENSITY 
INPUT 1 WAVE 
IMAG PART 12 
— 006) | 
S b 
ma | H 
= 0.02 | 
a ea 
é ice ig 
0.02 
000 0.50 1.00 0.00 oso 1.00 
FREQUENCY FREQUENCY 
POWER AND CROSS POWER SPECTRUM 
FREQUENCY RESPONSE FUNCTION 
INPUT 1 WAVE 
OUTPUT. 2 REL WAVE 
N=225 
0.00 I Ay, 
/ 
ne Ne 
0.00 050 1.00 
FREQUENCY 
5200 
38.00 
2 
-18.00 = 1.00 
: lass 
Co 
-54.00 aN = 000 
000 050 1.00 = 000 050 1.00 
FREQUENCY FREQUENCY 
FREQUENCY RESPONSE AND COHERENCY 
FREQUENCY RESPONSE FUNCTION 
INPUT. 1 WAVE 
OUTPUT: 2 REL. WAVE 
N=225 
FREQUENCY RESPONSE ANALYSIS BY AR MODEL 
(b) AR—model fitting method (order n=14). 
Fig. 7.11. Comparison of methods to analyze the frequency response characters 
of a model ship in the tank — sample 2. 
(From Yamanouchi, et al.4°) 
CROSS SPECTRAL DENSITY 
CROSS SPECTRAL DENSITY 
