基于环形阵列的地面无人装备集群通信干扰抑制

doi:10.12382/bgxb.2022.0904

摘要/Abstract

摘要：

为解决地面无人装备集群通信过程中出现的通信距离近、易干扰、信号覆盖面小等问题,提出基于环形阵列的干扰零陷方法。通过通道幅相一致性校准,再采用MUSIC算法进行DOA估计确定来向信号,最后采用Capon算法完成数字波束形成,可有效提取有用信号并抑制噪声和干扰。仿真实验结果表明,新方法不仅能够在方位面360°形成多个高增益波束实现集群分布指向,拓展地面无人装备之间的通信距离,而且能够通过检测解析确定干扰并对干扰来波方向进行波束零陷,在空间域有效提高地面无人装备集群组网通信抗干扰能力,并增大信号覆盖范围。所得研究成果为地面无人装备集群组网实现波束形成和干扰抑制提供了有益参考。

关键词: 无人装备, 环形阵列, 波束形成, 集群通信, 干扰抑制

Abstract:

To increase communication distance, enlarge signal coverage area, and suppress interference in ground unmanned equipment cluster communication, a new method based on circular array is proposed. By calibrating through channel amplitude-phase consistency, determining signal direction with the MUSIC algorithm, and completing digital beamforming with the Capon algorithm, the method can effectively extract useful signals, suppress noise and interference. Simulation results show that the method can form multiple high-gain beams in the 360° azimuth plane, enable cluster distribution, increase communication distance, and nullify interference. This improves the anti-interference capability of ground unmanned equipment cluster networking communication in the space domain, increasing signal coverage effectively. The research provides a useful reference for beamforming and interference suppression in ground unmanned equipment cluster networking.

Key words: unmanned equipment, circular array, beamforming, cluster networking, interference suppression

穆巍炜, 何滨兵, 齐尧, 李子先, 张志超, 徐友春. 基于环形阵列的地面无人装备集群通信干扰抑制[J]. 兵工学报, 2023, 44(5): 1414-1421.

MU Weiwei, HE Binbing, QI Yao, LI Zixian, ZHANG Zhichao, XU Youchun. Interference Suppressionin Ground Unmanned Equipment Cluster Communication Based on Circular Array[J]. Acta Armamentarii, 2023, 44(5): 1414-1421.

图/表 13

图1 地面无人装备集群通信示意图

Fig.1 Schematic diagram of ground unmanned equipment trunking communication

图2 环形阵列模型(俯视图)

Fig.2 Antenna array model (planform)

图3 环形天线实物图

Fig.3 Photograph of the antenna array

图4 集群通信干扰抑制步骤框图

Fig.4 Block diagram of the trunking communication interference suppression procedure

图5 幅相校正实现框图

Fig.5 Block diagram of the calibration process

图6 通道校准前后对比图(左为输入信号幅度参数,右为时域波形图)

Fig.6 Waveforms before and after channel calibration (the left image shows the amplitude of input signals, while the right is the waveform in the time-domain)

图7 谱峰搜索模块框图

Fig.7 Block diagram of the spectral peak search module

图8 4个子节点空间谱估计

Fig.8 Spatial spectrum estimation of four child nodes

图9 自适应波束形成框图

Fig.9 Adaptive beamforming block diagram

图10 2×4面阵环阵因子方向图

Fig.10 Directional diagram of 2×4 circular array factors

图11 干扰信号与子节点信号方向图

Fig.11 Direction diagram of interference signals and child node signals

图12 方位角0°指向增益方向图

Fig.12 Azimuth 0°-pointing gain pattern

图13 不同方位角指向增益方向图

Fig.13 Gain pattern with different azimuth pointings

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