When using the method, state transfer matrix is applied to produce the constraints, which can reduce the error from numerical method.

在应用这种方法时，利用状态转移矩阵来产生无推力段的约束，减少了数值方法的误差。

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For the estimation of satellite state, the extended sequential estimation algorithm was applied. The numerical method was used to integrate state vector and error covariance matrix.

在卫星的状态估计过程中应用推广的序列估计算法，借助数值积分方法积分状态向量和协方差矩阵。

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The key of this method is to apply the state transfer matrix between the initial state and the end state for iteration.

这种方法的关键是利用初始状态到终极状态的状态转移矩阵进行迭代。

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