Similarly, one can derive a corresponding result when a 
direction (cosa), COS85), COSy)) has been compensated for. 
The result is similar to equation (9) except that 
e = 7 (cosa - COSA ) 
and 
Ade2 
i 2 
(cos - cos& ) 
(d) Rectangular Parallelepiped 
Let a finite number of elements be arranged in the form of 
a rectangular parallelepiped such that J, = 2m, Ns = 2n, 
V3 = 2p are the number of elements in the x-direction, the 
y-direction, and the z-direction, respectively. The separa- 
tions in any axis direction between consecutive elements are 
equaltaeleectathesseparcationtbeng nid en G sully thei ay sur=, 
directions, respectively. Then the coordinates of the ith 
hydrophone will be, if the origin of the coordinate system 
is the center of the rectangular parallelepiped, (7+1/2)d,, 
(Ce A10/F2)) api (310): 2)) Gain Ctl oo) 
P(x0+ Yo: Zo) 
Wit, 2, A) 
Gans Vas Ba) 
eae (go 9 
Figure 6. Source and elements of 
a rectangular parallelepiped. 
ail 
