회전하는 고속 항체용 GPS/INS 통합 항법 시스템 설계

GPS/INS integrated navigation systems have been used for guided munitions. However, the conventional GPS/INS integrated navigation systems can not be applied to the spinning vehicles with high speed since GPS receiver and IMU are not in normal operation due to the spinning and high speed. This paper proposes a GPS/INS integrated navigation system design method for high speed spinning vehicles. A rotation demodulation loop is added to the conventional carrier tracking loop and carrier tracking loop band width is made to be wider than conventional one in order to remove the effect of high speed and spinning motion. The effect in the inertial navigation system can also be removed by using a rotation demodulation method. After elimination of the effect of high speed and spinning motion, the GPS receiver and INS can be integrated using a conventional integration filter. The proposed method is evaluated through computer simulations.