Journal of University of Chinese Academy of Sciences >
Radar signal sorting using integrated attention-based Bi-LSTM
Received date: 2025-03-04
Revised date: 2025-04-16
Online published: 2025-07-17
Radar signal sorting is a key aspect of radar electronic reconnaissance in modern warfare. However, as the electromagnetic environment becomes increasingly complex, the signals intercepted by reconnaissance receivers often suffer from a large number of missing pulses, spurious pulses, and pulse timing jitter. The complex electromagnetic environment is characterized by long-range signal correlations, diverse data distributions, and complementary information across different time steps. Existing bidirectional long short-term memory(Bi-LSTM)-based radar signal sorting methods perform inadequately, primarily due to their insufficient ability to model global dependencies, risks of gradient vanishing and overfitting, and limited feature interaction. This paper proposes an integrated attention Bi-LSTM method that addresses these issues through the incorporation of multi-head self-attention mechanisms, layer normalization, and residual connections. The main improvements include: 1) Data preprocessing: Converting the original time of arrival data into time difference of arrival data to enhance the robustness and accuracy of the input data. 2) Feature extraction and fusion: Utilizing Bi-LSTM layers to extract both forward and backward temporal information, while introducing a multi-head self-attention mechanism for deep feature fusion, balancing the capture of long-range dependencies and local detail extraction. 3) Optimizing training stability: Employing residual connections and dropout regularization to ensure smooth gradient propagation. Experimental results indicate that this method achieves significantly improved accuracy compared to traditional Bi-LSTM approaches, and the structural improvements effectively enhance the model’s robustness against pulses loss, spurious pulse, and pulse jitter.
Yuxiang ZHANG , Qunying ZHANG , Jinshuo HOU , Yingying WU , Xiaojun LIU , Guangyou FANG . Radar signal sorting using integrated attention-based Bi-LSTM[J]. Journal of University of Chinese Academy of Sciences, 2026 , 43(5) : 633 -640 . DOI: 10.7523/j.ucas.2025.023
| [1] | 李明松. 基于机器学习的雷达信号脉间参数分选研究[D]. 哈尔滨: 哈尔滨工程大学, 2021. DOI: 10.27060/d.cnki.ghbcu.2021.000277 . |
| [2] | 陈涛, 刘福悦, 李金鑫, 等. 基于深度分割的端到端雷达信号分选[J]. 系统工程与电子技术, 2023,45(5):1351-1358. DOI: 10.12305/j.issn.1001-506X.2023.05.11 . |
| [3] | 王怡明. 基于无监督聚类的雷达信号分选算法研究与系统设计[D]. 合肥: 安徽大学, 2023. DOI: 10.26917/d.cnki.ganhu.2023.001042 . |
| [4] | Li X Q, Liu Z M, Huang Z T. Attention-based radar PRI modulation recognition with recurrent neural networks[J]. IEEE Access, 2020, 8: 57426-57436. DOI: 10.1109/ACCESS.2020.2982654 . |
| [5] | 王俊岭, 黄琰璟. 基于序列关联的参差信号分选算法[J]. 电子与信息学报, 2021, 43(4): 1145-1153. DOI: 10.11999/JEIT191030 . |
| [6] | 刘严, 郭福成. 基于滑动时间窗的雷达脉冲列分选方法[J]. 电子与信息学报, 2022, 44(11): 3900-3909. DOI: 10.11999/JEIT210982 . |
| [7] | 普运伟, 陈新杰, 余永鹏, 等. 基于模糊函数多维结构度量特征的雷达辐射源信号流在线分选[J]. 仪器仪表学报, 2023, 44(8): 277-288. DOI: 10.19650/j.cnki.cjsi.J2311559 . |
| [8] | 隋金坪, 刘振, 刘丽, 等. 雷达辐射源信号分选研究进展[J]. 雷达学报, 2022, 11(3): 418-433. DOI: 10.12000/JR21147 . |
| [9] | Chi K, Shen J H, Li Y, et al. Multi-function radar signal sorting based on complex network[J]. IEEE Signal Processing Letters, 2020, 28: 91-95. DOI: 10.1109/LSP.2020.3044259 . |
| [10] | Wang C, Wang Y, Li X Q, et al. A deinterleaving method for mechanical-scanning radar signals based on deep learning[C]//2022 7th International Conference on Intelligent Computing and Signal Processing (ICSP). April 15-17, 2022, Xi’an, China. IEEE, 2022: 138-143. DOI: 10.1109/ICSP54964.2022.9778808 . |
| [11] | 何利健, 张锐, 林晓冬. 基于DWT和双通道LSTM的卫星电池阵电流预测方法[J]. 中国科学院大学学报, 2023, 40(3): 415-421. DOI: 10.7523/j.issn.2021.0028 . |
| [12] | 王艺璇, 张怀, 石耀霖, 等. 基于LSTM神经网络的南加州中期地震预测[J]. 中国科学院大学学报, 2025, 42(2): 199-208. DOI: 10.7523/j.ucas.2023.068 . |
| [13] | 李洁, 林永峰. 基于多时间尺度RNN的时序数据预测[J]. 计算机应用与软件, 2018, 35(7): 33-37,62. DOI: 10.3969/j.issn.1000-386x.2018.07.006 . |
| [14] | 姜在阳, 孙思月, 李华旺, 等. 一种基于JANET模型的雷达信号分选方法[J]. 中国科学院大学学报, 2021, 38(6): 825-831. DOI: 10.7523/j.issn.2095-6134.2021.06.013 . |
| [15] | Liu Z M, Yu P S. Classification, denoising, and deinterleaving of pulse streams with recurrent neural networks[J]. IEEE Transactions on Aerospace and Electronic Systems, 2019, 55(4): 1624-1639. DOI: 10.1109/TAES.2018.2874139 . |
| [16] | Guo Q, Teng L, Qi L G, et al. A novel radar signals sorting method-based trajectory features[J]. IEEE Access, 2019, 7: 171235-171245. DOI: 10.1109/ACCESS.2019.2955819 . |
| [17] | Zhu M T, Wang S F, Li Y J. Model-based representation and deinterleaving of mixed radar pulse sequences with neural machine translation network[J]. IEEE Transactions on Aerospace and Electronic Systems, 2022, 58(3): 1733-1752. DOI: 10.1109/TAES.2021.3122411 . |
| [18] | 王易丽. 基于机器学习的雷达信号分选算法研究[D]. 成都: 电子科技大学, 2023. DOI: 10.27005/d.cnki.gdzku.2023.005056 . |
| [19] | Beck M, P?ppel K, Spanring M, et al. Xlstm: extended long short-term memory[EB/OL]. arXiv 2024:2405.04517. (2024-12-06)[2025-04-08]. . |
| [20] | 廉文超, 宋小全, 郝朝阳, 等. 双向长短期记忆网络在激光雷达风廓线预测的应用[J]. 光学学报, 2024, 44(24): 58-67. DOI: 10.3788/AOS240891 . |
| [21] | Vaswani A, Shazeer N, Parmar N, et al. Attention is all you need[EB/OL]. arXiv 2023:1706.03762. (2023-08-02)[2025-04-08]. . |
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