Coefficient identification of trajectory correction fuze based on sensitivity function

Trajectory correction fuze is the integrated guidance and control and the new fuze technology which can correct trajectory through the fuze. In order to improve solution precision for trajectory correction fuze, a resistance coefficient identification method based on the sensitivity theory of control system is put forward. Combined with test data of the ballistic parameters, resistance coefficient is identified in each step to correct aerodynamic parameter in the missile space motion model, and a simulation example is given. The example shows that the method can be used in the actual flight trajectory solution process through the solver in trajectory correction fuze.