Based on the detailed analysis of the channel impulse response (CIR) leakage in the practical OFDM systems, a sub-optimal time domain channel estimation algorithm is proposed.

基于对实际系统中信道冲激响应(CIR)泄漏问题的详细分析，提出了一种次优的时域信道估计算法。

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Primary filter accomplishes the fusion of public state vectors about sub filters and time updating, and outputs the credible, precise and optimal estimation of navigation parameter error.

主滤波器(全局滤波器)进行子滤波器的公共状态矢量融合和时间更新，输出可靠、准确的导航参数误差的全局最优估计量。

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