概括
这项研究探讨了通过使用轨道角动量 (OAM) 模式的等离子体罩流动传输彩色图像. 结果显示,流影响图像质量和错误率,但拟议的方法是可行的.
科学领域:
- 光学通信是一种光学通信.
- 血物理学的等离子体物理学
- 图像传输 图像传输
背景情况:
- 等离子膜流 (PST) 给自由空间光学 (FSO) 通信带来了挑战.
- 在PST中异型折射率波动会影响信号完整性.
研究的目的:
- 通过0.4米PST通道进行色彩图像传输的数值调查.
- 提出和评估使用轨道角动量 (OAM) 模式在PST中传输图像的编码/解码模型.
主要方法:
- 通过PST通道进行图像传输的数值模拟.
- 使用带有轨道角动量 (OAM) 模式的高斯旋流束进行编码/解码.
- 分析折射率波动变异,外表尺度和异性变异参数对PSNR和BER的影响.
主要成果:
- 增加的折射率波动变量,减少的外表尺度和减少的异型变量参数导致PSNR较低和BER较高.
- 在弱动荡下实现了1.25 × 10−4的位误差率 (BER),在强动荡下达到0.447.
- 成功传输了256 × 256像素的彩色图像,证明了该方案的可行性.
结论:
- 拟议的基于OAM的编码/解码方案可用于PST频道的图像传输.
- 图像质量和错误率对PST特征敏感.
- 进一步的研究可以优化该方案,以在动荡的等离子体环境中实现FSO通信.
相关概念视频
01:18Conservation of Angular Momentum: Application
10.9K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely spinning bicycle tire that slows over time due to torque arising from friction, or the slowing of Earth's rotation over millions of years due to frictional forces exerted on tidal deformations. However in the absence of a net external torque, the angular momentum remains conserved. The conservation of angular momentum principle requires a...
10.9K
01:09Conservation of Angular Momentum
10.2K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Considering a system that consists of n tiny particles, the angular momentum of any tiny particle may change, but the system's total angular momentum would remain constant. The principle of conservation of angular momentum only considers the net external torque acting on the system. While there are internal forces exerted by different particles within the system that also produce...
10.2K