保护间隔长度对长脉冲信号检测的影响

2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2018-10-01 DOI:10.1109/EEXPOLYTECH.2018.8564380

Ilnur R. Ishkaev, A. Belov, S. Zavjalov

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引用次数: 2

摘要

讨论了具有未知参数的脉冲检测问题。如果脉冲持续时间超过检测器滑动窗口的持续时间，则考虑检测长脉冲信号。详细研究了一种广泛应用的带滑动窗的自适应检测器——单元平均恒虚警率检测器。结果表明，在分析样本和滑动窗口之间使用较长的保护间隔有助于显著提高正确检测长脉冲信号的概率。还表明，与使用相同的间隔长度相比，使用不同长度的保护间隔有助于增加正确检测脉冲序列的概率。结果并不局限于CA-CFAR检测器，因为许多其他类型的自适应检测器使用滑动窗口进行噪声电平估计遭受类似的问题。

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Influence of Guard Intervals Length on Detection of Long Pulse Signals

Problems of pulse detection with unknown parameters are discussed. Detection of long pulse signals if the pulse duration exceeds duration of the detector sliding windows is considered. A widely used adaptive detector with sliding windows, known as cell averaging constant false alarm rate (CA-CFAR) detector, is investigated in detail. It is shown, that the use of long guard intervals between the analyzed sample and the sliding windows helps to significantly increase the probability of correct detection of long pulse signals. It is also shown that the use of different lengths of these guard intervals helps to increase the probability of correct detection of pulse trains in comparison with the use of identical interval lengths. The results are not limited to CA-CFAR detectors since many other types of adaptive detectors using sliding windows for noise level estimation suffer from similar problems.

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2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)

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