Modeling and analysis of guidance loop with velocity pursuit guidance law

Taking initial aiming error as inertial small perturbance, we established a model of guidance loop with velocity pursuit guidance law at the ideal conditions and deduced an analytical expression. Normalizing the analytical expression, we obtained only one design parameter, non-dimentional terminal guided time, which can directly determine the guidance accuracy and the missile lateral acceleration. The scope of the parameter was given by analyzing non-dimensional lateral acceleration and miss-distance.