Journal of Jilin University(Engineering and Technology Edition) ›› 2026, Vol. 56 ›› Issue (2): 564-574.doi: 10.13229/j.cnki.jdxbgxb.20240827

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Online sorting method of radar signal based on self-supervised data stream

Yun-wei PU1,2(),Lin DU1,Zi-yu DAI1,Zhi-qiang HE1   

  1. 1.Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China
    2.Computer Center,Kunming University of Science and Technology,Kunming 650500,China
  • Received:2024-07-22 Online:2026-02-01 Published:2026-03-17

Abstract:

To address the challenges of radar signal interception and low sorting accuracy in the electronic warfare domain, this paper proposes a new online sorting method for radar signals based on self-supervised data streams. Firstly, a balanced feature fusion method using generative adversarial networks is employed to achieve high-quality feature fusion and sample enhancement with limited samples. Secondly, a self-supervised model based on multi-task meta-learning is constructed to realize online sorting of unlabeled signal streams. Finally, experimental results show that the proposed method achieves an accuracy of 95.82% on a simulated dataset at 4 dB, and it also performs well on real and public datasets, confirming the effectiveness of the proposed method in online sorting of data streams.

Key words: radar signal, online sorting, unsupervised learning, data stream

CLC Number: 

  • TN974

Fig.1

AF main ridge slices and orthogonal slices of radar signal"

Fig.2

Comparison of the AF main ridge slice filter of the LFM signal before and after filtering"

Fig.3

BFFGAN framework diagram"

Fig.4

SCMTL framework diagram"

Fig.5

Overall sorting flow chart"

Table 1

Results of experiments on Iris and Wine dataset"

数据集PSO-KABC-K本文
IrisAcc/%88.2486.3293.48
T/s6.244.432.67
WineAcc/%72.1261.8994.65
T/s7.994.452.79

Fig.6

Scatter plot of feature distribution"

Table 2

Different characteristics and results of ablation experiments"

模型特征1和特征2特征3和特征4
Acc/%T/sAcc/%T/S
SCMTL29.123.7834.432.36
GAN-SCMTL60.437.8669.784.54
BFFGAN-SCMTL81.665.5895.822.87

Fig.7

Monte Carlo experiment results"

Table 3

Parameters of measured radar emitter signals data set"

雷达信号参 数
RF/MHzPW/μs
1

9 645、9 662、9 682、9 750、9 810

共5个频点波位组变,频率分集

20
2

9 762、9 773、9 792、9 807、9 822、

9 833共6个频点波位组变

3~5个脉冲为1组,

每组PW在7、13任意

39 500~9 700单脉冲捷变

3~5个脉冲为1组,

每组PW在0.9、1.0、

1.1、1.2任意

49 850固定16
5

9 513/9 518/9 523/9 548/9 553/

9 563共6个频点波位组变

3~5个脉冲为1组,每组PW在6、12、18任意

Fig.8

Results of online sorting of radar signal streams"

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