Transformation and simplification of Single Channel Rolling Missiles Autopilot

To design the autopilot of single channel rolling missiles in quasi-body coordinate system, autopilot structure is given in body coordinate system.The autopilot loop is transferred from body coordinate system to quasi-body coordinate system after a rolling transformation.Simulation results prove that the transform method is correct.Transformed autopilot loop is simplified by omitting the effect of the component of duple rolling frequency.Simulation results show the simplification is feasible.Simplified model can be used to design autopilot in quasi-body coordinate system.