Activation of new aaa units - Air Defense Artillery

1948 DETERl\lINATION OF FIRING ERRORS FOR HEAVY AAA 33
muth and elevation errors are of the same order of magnitude
and independent of each other. Actually, the studies
indicated that the ratio of these errors varied from unity to
one and a half. A separate study was made on the degree of
independence, and a small degree of dependence was fOLlnd.
.-\.nadditional study was made to determine the amount of
error which would be introduced by the assumptions used,
and this study indicated that no significant error resulted.
ihe study described above will, when completed, have
obtained the standard deviations for a large number of
points in space. Interpolation, and to a lesser extent, extrapolation,
can be used to obtain standard deviations for any
point in space within range of the weapon studied. The
distribution of firing errors having been determined, there
remains only the problem of combining this distribution
with the lethality of bursts to obtain an answer to the question,
"What are the capabilities of antiaircraft weapons engaging
targets at all altitude and ranges."
The techniques described are applicable not only to the
antiaircraft weapons on which the experimental data were
taken, but to modifications and improvements of present
weapons as well as to new equipment. Where the behavior
of the new equipment can be forecast, theoretical explorations
can be made. Where a combination of fact