Ballistic Missile Error Budget Analysis and Measures of Most Probable Causes of CEP Error

There are always some errors between the desired impact position of ballistic missiles and their real impact position.Estimation of this error is important from operational point of view. Investigation of sources of this error and its’ effects on the missile can help a designer to optimize the parameters so that the circular error probability (CEP) is minimized.This paper investigates the problems of dispersion of ballistic missiles during the boosting phase and the free flight phases following that. In this work a specific missile has been extensively studied using the six degree of freedom missile flight trajectory simulator in the Matlab software. The influence of the control parameters and different guidance and navigation subsystems on the CEP and its scattering budget are analyzed, and their significance from a designer point of view are measured.