基于多帧多级处理的雷达信号分选方法  

Radar Signal Sorting Based on Multi-frame and Multi-stage Processing

作　　者：张旗 董阳阳 张立东 付驰 董春曦[1] ZHANG Qi;DONG Yangyang;ZHANG Lidong;FU Chi;DONG Chunxi(School of Electronic Engineering,Xidian University,Xi’an 710071,China;Unit 93209 of PLA,Beijing 100085,China)

机构地区：[1]西安电子科技大学电子工程学院,西安710071 [2]中国人民解放军93209部队,北京100085

出　　处：《电讯技术》2024年第11期1836-1843,共8页Telecommunication Engineering

摘　　要：在愈发复杂的电磁环境的情况下,对于未知脉冲分选利用现有统计方法和聚类等智能方法时间复杂度过高,无法满足实时性要求。利用分段处理可以优化统计法运算速度,但会导致无法对低重频信号进行有效分选。针对上述问题,提出了一种基于多帧多级处理的雷达信号分选方法,能够大幅度降低运算时间且保留对低重频信号分选的能力。在处理过程中,将很长的脉冲流进行多帧多级处理,通过多帧处理减小分选的时间复杂度,通过多级处理消除多帧处理对低重频信号的分选结果造成的影响。最后对每帧的分选结果进行合批处理。该方法在相同数据集相比传统分选模型,以每帧200个脉冲进行实验,在不损失低重频信号分选准确率的情况下运算时间减少为原来的0.06倍,对比传统分段处理,低重频信号的漏分选率由77%降低至4%。相对现有分选算法,多帧多级处理分选效果较好,具有一定实际应用意义。In the increasingly complex electromagnetic environment,the time complexity of existing statistical methods and intelligent methods such as clustering for unknown pulse sorting is too high,which can not meet the real-time requirements.Segmentation processing can optimize the speed of statistical method,but it can not effectively sort the low repetition frequency signal.To solve above problems,a radar signal sorting method based on multi-frame multi-stage processing is proposed,which can greatly reduce the operation time and retain the ability of sorting low repetition frequency signals.In the processing process,the long pulse stream is processed by multi-frame multi-stage,and the time complexity of sorting is reduced by multi-frame processing.Through multi-stage processing,the effect of multi-frame processing on the sorting results of low refrequency signals is eliminated.Finally,the sorting results of each frame are processed in batch.Compared with the traditional sorting model,this method is tested with 200 pulses per frame in the same dataset,and the operation time is reduced to 0.06 times without losing the sorting accuracy of the low repetition frequency signal.Compared with the traditional segmentation processing,the missing sorting rate of the low repetition frequency signal is reduced from 77%to 4%.Compared with the existing sorting algorithms,multi-frame multi-stage processing has better sorting result,and has certain practical application significance.

关 键 词：雷达信号分选 多帧多级处理 合批处理 

分 类 号：TN974[电子电信—信号与信息处理]