Transform and coupling analysis of double-channel control rolling missile autopilot loop

Based on the characteristics of rolling missile with double-channel control, the autopilot loop is transferred from body coordinate system to quasi-body coordinate system after a rolling transfer. Compared with a non-rotating missile standard autopilot, the body and fin servo models of the autopilot are both changed. Couplings of motion, control and the accelerometer placed at a distance ahead of the c.g. exist in the rolling missile autopilot loop. The results show that the autopilot design needs decoupling.