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Updated: Sep 11, 2025

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在认知卫星-地面网络中进行安全分析,使用不可信的LEO中继和友好的干扰
1The School of Physics and Electronic Information, Weifang University, Weifang, Shandong, China.
PloS one
|August 11, 2025
概括
这项研究提高了认知卫星网络的物理层安全性,使用不可信赖的低地球轨道 (LEO) 继电器. 优化干扰值和考虑遮可以提高数据安全性,防止窃听.
科学领域:
- 电信工程 电信工程 电信工程
- 信息安全 信息安全
- 无线通信系统无线通信系统
背景情况:
- 认知卫星-地面网络面临的安全挑战是由于不可靠的继电器.
- 物理层的安全性对于保护机密数据传输至关重要.
- 放大和向前 (AF) 继电器策略在低地球轨道 (LEO) 网络中使用.
研究的目的:
- 在认知卫星-地球网络中分析和增强物理层安全性.
- 调查认知无线电约束对保密率的影响.
- 评估来自友好的干扰器对窃听的人工噪音的有效性.
主要方法:
- 检查了具有地面用户 (GU),不可信赖的LEO继电器和地球静止轨道 (GEO) 卫星的认知卫星-地面网络.
- 采用了放大和向前 (AF) 继电器策略,并引入了一个友好的LEO干扰器,它会发出人工噪音.
- 在认知无线电约束下分析了保密率,包括干扰值,继电器增益和GU-LEO链路影像.
主要成果:
- 增加干扰值最初提高了隐蔽率,但由于最大传输功率限制,性能和.
- 通过调整干扰值,取消最大传输功率限制,允许优化隐蔽率.
- 较轻的阴影条件通常会提高隐蔽率,尽管提高了不可信赖的中继的通道质量.
结论:
- 通过仔细管理干扰值和中继策略,可以显著提高认知卫星-地球网络的物理层安全性.
- 这些发现为设计卫星网络中安全通信协议提供了实际见解.
- 优化认知无线电参数和了解影像等环境因素是强大的网络安全的关键.
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