基于MAAM-LKN模型的稀疏阵列双子阵RCS缩减方法
RCS Reduction Method for Sparse Array Dual-Subarray Based on MAAM-LKN Model
- 电子学报 2026年 页码：1-9
- 作者机构：
1.重庆理工大学电气与电子工程学院，重庆 400054
2.西南电子技术研究所，四川成都 610036
3.重庆大学微电子与通信工程学院，重庆 400044
- 作者简介：
[ "吉利霞 女，1993年10月出生于河北省邢台市，现为重庆理工大学讲师，主要研究方向为阵列信号处理，阵列RCS缩减与深度学习。E-mail: jlx@cqut.edu.cn" ]
[ "陈毅乔 男，1983年9月出生于四川省成都市，现为西南电子技术研究所研究员，主要研究方向为阵列天线与电磁场数值模拟。E-mail: sccdcyq@163.com" ]
[ "任志刚 男，1981年6月出生于黑龙江省佳木斯市，现为西南电子技术研究所研究员，主要研究方向为可重构天线与电磁场数值模拟。E-mail: eric667@163.com" ]
[ "曾浩 男，1977年11月出生于四川省泸州市，现为重庆大学教授，主要研究方向为阵列信号处理，阵列RCS缩减与深度学习。E-mail: haoz@cqu.edu.cn" ]
- 基金信息：重庆理工大学科研启动基金(2025ZDZ025)
DOI：10.12263/DZXB.20250961
中图分类号： TN828;收稿：2025-11-15，
录用：2025-12-10，
网络首发：2026-03-26，
- 稿件说明：
移动端阅览
吉利霞, 陈毅乔, 任志刚, 等. 基于MAAM-LKN模型的稀疏阵列双子阵RCS缩减方法[J/OL]. 电子学报, 2026,1-9.
JI Lixia, CHEN Yiqiao, REN Zhigang, et al. RCS Reduction Method for Sparse Array Dual-Subarray Based on MAAM-LKN Model[J/OL]. ACTA ELECTRONICA SINICA, 2026, 1-9.
吉利霞, 陈毅乔, 任志刚, 等. 基于MAAM-LKN模型的稀疏阵列双子阵RCS缩减方法[J/OL]. 电子学报, 2026,1-9. DOI： 10.12263/DZXB.20250961.
JI Lixia, CHEN Yiqiao, REN Zhigang, et al. RCS Reduction Method for Sparse Array Dual-Subarray Based on MAAM-LKN Model[J/OL]. ACTA ELECTRONICA SINICA, 2026, 1-9. DOI： 10.12263/DZXB.20250961.
摘要
阵列天线雷达散射截面（Radar Cross Section，RCS）等于天线散射单元因子与散射阵因子的乘积。通常采用稀疏阵列布局优化的方法，实现对散射阵因子峰值的抑制。近年来，基于深度学习的稀疏阵列RCS缩减方法有效提高了阵面的实时隐身性能。稀疏优化难以机械地实时拆除阵列中的天线，通常是通过负载匹配或自动相消的方法缩减无需工作的阵元RCS来实现，进而等效为“删除”阵元。但无论是负载匹配法，还是自动相消法，都无法使关闭阵元的RCS缩减至零，通常只能将其缩减到一个较小的值。然而，现有的基于深度学习的稀疏阵列RCS缩减方法都是针对关闭阵元RCS为零的场景，因此，已有方法不能适用于实际应用场景。为了解决该问题，提出了一种基于多模态与增强注意力机制的轻核网络（Light Kernel Network Based on Multimodal and Augmentation Attention Mechanism，MAAM-LKN）模型的稀疏阵列双子阵RCS缩减方法。具体而言，考虑到关闭阵元RCS通常不为零，引入了关闭阵元RCS因子，建立了稀疏阵列双子阵优化的问题模型与目标函数，利用MAAM-LKN模型同时优化工作子阵与关闭子阵的阵列布局，从而缩减工作子阵与关闭子阵的RCS，最终实现整个阵面的RCS最小。此外，由于现有用于稀疏阵列RCS缩减的神经网络模型缺乏对重要信息的关注，在MAAM-LKN模型中，设计了增强注意力机制，根据特征的重要程度对特征进行加权，解决了特征传播过程中重点特征不够突出的问题，同时，为了提高模型的理解能力，引入多模态思想，实现更有效的重点特征提取与感知。仿真结果表明：在不同关闭阵元RCS因子下，双子阵优化与单子阵RCS优化相比，都能够有效提升稀疏阵列天线的RCS缩减性能，RCS最大缩减值能够提升2.72 dB以上，RCS平均缩减值能够提升0.19 dB以上；当关闭阵元RCS不为零时，MAAM-LKN模型的准确率为91.09%，RCS缩减均值为5.9 dB，均高于其他神经网络模型，同时保持模型复杂度相当。
Abstract
The radar cross section (RCS) of an array antenna equals the product of the antenna scattering element factor and the array factor. Typically
sparse array arrangement optimization is used to suppress the peak value of the scattering array factor. In recent years
deep learning-based methods for sparse array RCS reduction have effectively improved the real-time stealth performance. However
sparse optimization cannot mechanically remove the elements from the array in real time. The load matching and active cancellation methods are used as the equivalent method to delete the passive elements
but these methods cannot reduce the RCS of passive elements to zero
they can only reduce it to a small value. Existing deep learning-based sparse array RCS reduction methods are designed for scenarios where the RCS of passive elements is zero. So
these existing methods unsuitable for practical applications. To address this issue
this paper proposes a sparse array dual-subarray RCS reduction method based on a light kernel network with multimodal and augmentation attention mechanism (MAAM-LKN). Specifically
considering that the RCS of passive elements is usually non-zero
a passive RCS factor of element is introduced. A problem model and objective function for sparse array dual-subarray optimization are established
and the MAAM-LKN model simultaneously optimizes the array arrangements of both the active and passive subarrays. This reduces the RCS of both subarrays and ultimately minimizes the overall RCS of the array. Moreover
since existing neural network models for sparse array RCS reduction lack focus on important information
an augmented attention mechanism is designed in the MAAM-LKN model to weight features according to their importance. This addresses the issue of insufficient emphasis on key features during feature propagation. Additionally
to enhance the model’s comprehension capability
the multimodal is introduced to achieve more effective extraction and perception of key features. Simulation results show that under different passive element RCS factor values
dual-subarray optimization can effectively improve the RCS reduction performance compared to single-subarray RCS optimization. The maximum RCS reduction value can be improved by more than 2.72 dB
and the average RCS reduction value can be improved by more than 0.19 dB. When the RCS of passive elements is non-zero
the MAAM-LKN model achieves an accuracy of 91.09% and an average RCS reduction of 5.9 dB
both higher than other neural network models
while maintaining comparable model complexity.
关键词
Keywords
references
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