well as other relevant dynamics e g speed course etc of the torpedo as a pursuing vehicle relative to the launch position as a function of time the simulation begins at the launch time t f the origin of the coordinate system for output position data is referenced to the launch point with the x axis aligned to the launcher axis that is the x axis coincides with line trajectory 25 in fig2 the evaluation of the accuracy of the kinematic models consists of matching the x and y output data from the simulator to the x and y positions of the kinematic models at the end of each of the individual trajectory phases shown in fig3 this evaluation will require transformation to align the trajectory data from the six degree of freedom model to the coordinate system of the kinematic vehicle models such transformations are well known in the art an off line characterization process 42 within system 40 provides the operating phases shown in fig3 and the ballistic parameters or corresponding phases and ballistic parameters for other types of pursuing vehicles once the operating phases and parameters have been defined a parameter value extraction module 43 analyzes the data from the three dimensional vehicle model module 41 the module 41 has to be run thousands of.