Page 95 - Dynamic Loading and Design of Structures
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In HIT, , and the cross-spectrum of u for these
points, written S (z, z';n), is a real quantity. The HIT presumption clearly also implies that it
uu
is a function of the separation distance , not of z or z' individually, and can
conveniently be normalized by division by the single point spectrum. The resulting
‘normalized co-spectrum’ is commonly written , i.e.
(3.10)
