APPROXIMATE CIRCULAR AND NON-CIRCULAR OFFSET PROBABILITIES OF HITTING
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
For equal or unequal delivery errors and an offset point of aim, the chance that the burst point of a warhead occurs within a given distance of a selected point of the target is approximated by reference to the Non-central Chi-square distribution. Offset circular and non-circular probabilities of hitting for the two and three dimensional cases may thus be approximated wiw detaated with a single, straight-forward and rather simple technique by the use of a central Chi-square distribution with fractional number of degrees of freedom or a transformation to approximate Normality. Computations of probabilities of hitting are illustrated by examples. The approximations recommended appear to be of sufficient accuracy for many weapon systems evaluation pp problems. This report supersedes BRL Memorandum Report No. 1472.
- Statistics and Probability
- Ammunition and Explosives