对于带有轨道角动量的电磁贝塞尔束的反干扰解复方法
Congwei Mi1, Xiuqiong Huang1, Wensheng Qiao1
1National Key Laboratory of Complex Aviation System Simulation, Southwest China Institute of Electronic Technology, Chengdu 610036, China.
Sensors (Basel, Switzerland)
|November 13, 2025
概括
一种新的光滑动态模式分解 (DMD) 方法增强了轨道角动量 (OAM) 束的反干扰解复. 这种技术即使在杂的环境中也能准确地提取OAM电荷,从而改善无线通信和传感.
科学领域:
- 光学和光子学 在光学和光子学.
- 信号处理 信号处理
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 轨道角动量 (OAM) 束为先进的通信提供了独特的特性.
- 解复数OAM模式对于实际应用至关重要,但在噪音条件下具有挑战性.
- 像标准动态模式分解 (DMD) 等现有方法可能对干扰和低信号噪声比 (SNR) 敏感.
研究的目的:
- 为携带OAM的电磁贝塞尔束开发一种反干扰解复方法.
- 在低SNR环境中增强OAM模式提取的稳定性.
- 在现实场景中为OAM光束分析提供实用解决方案.
主要方法:
- 通过将移动平均线预处理步骤与传统的DMD相结合,引入了光滑的动态模式分解 (光滑的DMD).
- 模拟了以向取样的OAM场作为一个时空信号进行分析.
- 通过数值模拟验证了该方法.
主要成果:
- 与标准的DMD相比,光滑的DMD显示出更高的抗干扰性能.
- 即使在低SNR条件下,也可以实现OAM拓电荷的精确提取.
- 该方法在部分光圈检测方面被证明是有效的,并且不需要OAM模式正交.
结论:
- 拟议的光滑DMD方法为OAM光束的反干扰解复提供了一个强大而有效的解决方案.
- 这种技术适用于不完美的,现实世界的条件,增强OAM光束分析.
- 该方法对下一代无线通信和传感应用具有重大意义.
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