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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >An unbiased FIR filter for TIE model of a local clock in applications to GPS-based timekeeping
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An unbiased FIR filter for TIE model of a local clock in applications to GPS-based timekeeping

机译：用于基于GPS的计时的本地时钟TIE模型的无偏FIR滤波器

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摘要

An unbiased finite impulse response (FIR) filter is proposed to estimate the time-interval error (TIE) K-degree polynomial model of a local clock in Global Positioning System (GPS)-based timekeeping in the presence of noise that is not obligatory Gaussian. Generic coefficients for the unbiased FIRs are derived. The low-degree FIRs and noise power gains are given. An estimation algorithm is proposed and examined for the TIE measurements of a crystal clock in the presence of the uniformly distributed sawtooth noise induced by the multichannel GPS timing receiver. Based upon this algorithm, we show that the unbiased FIR estimates are consistent with the reference (rubidium) measurements and fit them better than the standard Kalman filter.
机译：提出了一种无偏有限冲激响应（FIR）滤波器，用于在存在非强制性高斯噪声的情况下，估算基于全球定位系统（GPS）的计时中本地时钟的时间间隔误差（TIE）K度多项式模型。推导了无偏FIR的通用系数。给出了低阶FIR和噪声功率增益。提出了一种估计算法，并在存在由多通道GPS定时接收器引起的均匀分布锯齿噪声的情况下检查了晶体时钟的TIE测量。基于此算法，我们证明了无偏FIR估计值与参考（））测量值一致，并且比标准Kalman滤波器更适合它们。

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