余弦加权抗抖动脉冲分选算法  

Anti-jitter pulse sorting method using cosine weighting

作　　者：聂玉明[1] 金铭[1,2] 栾超[2] 乔晓林[1,2] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,哈尔滨150001 [2]哈尔滨工业大学信息工程研究所,山东威海264209

出　　处：《哈尔滨工业大学学报》2013年第7期42-46,共5页Journal of Harbin Institute of Technology

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.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.

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 

分 类 号：TN95[电子电信—信号与信息处理]