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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Feedback median filter for robust preprocessing of glint noise
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Feedback median filter for robust preprocessing of glint noise

机译：反馈中值滤波器可对闪烁噪声进行强大的预处理

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摘要

Glint noise may arise in a target tracking system. The non-Gaussian behavior of glint noise can severely degrade the tracking performance. Measurement preprocessing at the front-end of the tracker is an effective method to reduce glint noise. The preprocessor proposed by Hewer, Martin, and Zeh (1987), which used the computationally intensive M-estimator, may not be suitable for practical implementation. An alternative method employing the median filter is studied here. The median filter is well known for its simplicity and robustness. However, the efficiency of the median filter can be seriously degraded if input samples are not identically distributed. This is what we may encounter in the tracking problem. A feedback median filter is then proposed to overcome this impediment without substantially increasing complexity. Simulations show that the new preprocessor can greatly improve tracking performance in the glint noise environment.
机译：目标跟踪系统中可能会出现闪光噪声。闪烁噪声的非高斯行为会严重降低跟踪性能。在跟踪器前端进行测量预处理是减少闪烁噪声的有效方法。 Hewer，Martin和Zeh（1987）提出的预处理器使用了计算量大的M估计量，可能不适合实际实现。本文研究了采用中值滤波器的另一种方法。中值滤波器以其简单性和鲁棒性而闻名。但是，如果输入样本分布不均，则中值滤波器的效率可能会严重下降。这就是我们在跟踪问题中可能遇到的问题。然后提出反馈中值滤波器以克服该障碍，而基本上不增加复杂度。仿真表明，新的预处理器可以大大改善在闪烁噪声环境中的跟踪性能。

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