Abstract:There are two schemes of fine alignment and coarse alignment for aircraft launched on moving base. Because the coarse alignment adopts the misalignment angle obtained in advance, the uncertainty of time effect makes it difficult to obtain the alignment deviation, which is not conducive to the analysis of guidance accuracy. In this paper, an equivalence analysis method of aircraft alignment scheme based on hit accuracy evaluation is proposed. Based on the confidence upper bound estimation method, the equivalence of the two alignment schemes is verified under the evaluation criteria by independently evaluating and comparing the sub samples of aircraft coarse alignment and fine alignment, effectively determining the time effect of misalignment angle on accuracy in coarse alignment state.