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On a Specific Force Based Tansfer Alignment Method of Strapdown Navigation System in Targeting Pod

The strapdown navigation system installed in targeting pod adopts low precision inertial components and the transfer alignment process is performed in low dynamic conditions. In view of the above phenomena, a method of ‘specific force integral/angular velocity matching’ is proposed, and the error model of the master and slave inertial navigation system is derived. The observability of the system states is analysed in condition of various instrument precisions and maneuvers. The simulation process is designed and the result shows that the misalignment of the method fits the performance index of the rapid transfer alignment.