| 引用本文: | 聂玉明,金铭,栾超,乔晓林.余弦加权抗抖动脉冲分选算法[J].哈尔滨工业大学学报,2013,45(7):42.DOI:10.11918/j.issn.0367-6234.2013.07.008 |
| NIE Yuming,JIN Ming,LUAN Chao,QIAO Xiaolin.Anti-jitter pulse sorting method using cosine weighting[J].Journal of Harbin Institute of Technology,2013,45(7):42.DOI:10.11918/j.issn.0367-6234.2013.07.008 |
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| 摘要: |
| 为了改善直方图算法在雷达信号分选时的抗抖动性能,提出了一种基于余弦加权的分选算法． 该方法采用可变长度的交叠箱,收集到的雷达脉冲重复间隔（PRI）落入数个连续的箱体,对这些箱体的直方图增量进行归一化余弦平滑加权,在超过门限的谱峰处得到估计的雷达脉冲重复间隔（PRI）． 该方法得到的直方图比较平滑,谱峰清晰,且能有效地抑制二次谐波．实验结果表明,该算法具有良好的抗抖动性能． |
| 关键词: 雷达信号分选；脉冲重复间隔；余弦加权 序列差直方图 |
| DOI：10.11918/j.issn.0367-6234.2013.07.008 |
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| Anti-jitter pulse sorting method using cosine weighting |
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NIE Yuming1, JIN Ming1,2, LUAN Chao2, QIAO Xiaolin1,2
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(1. Department of Electronics and Information Engineering, Harbin Institute of Technology, 150001 Harbin, China;2. Institute of Information and Engineering, Harbin Institute of Technology at Weihai, 264209 Shandong Weihai, China)
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| Abstract: |
| This paper presents a sorting method based on cosine weighting to improve the anti-jitter ability of histogram algorithm in radar signal sorting. This method uses variable and superposed boxes, into which the collected radar pulses repetition interval (PRI) falls, and the histogram increment of these boxes are normalized weighted by cosine window smoothly. Each peak position of the histogram that exceeds threshold is the estimated PRI of radar. The histogram obtained by this method is smooth and the peak is clear. Furthermore, the sub-harmonic is well restrained. Experimental result shows that this method has good anti-jitter ability. |
| Key words: radar signal sorting PRI cosine weighting SDIF
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