论文标题
确保飞机间链接：基于多普勒频移的物理层密钥生成
Securing the Inter-Spacecraft Links: Doppler Frequency Shift based Physical Layer Key Generation
论文作者
论文摘要
我们为飞机间通信链接提出了一种新颖的物理层秘密密钥生成方法。通过利用互惠航天器链接作为独特的保密来源的多普勒频率移动，航天器的目的是从其单个观察结果中获得相同的秘密键。我们获得关键分歧率（KDR）的理论表达式。使用广义的高斯劳格正交，我们得出KDR的封闭形式表达式。通过数值研究，显示了所提供的近似值的紧密度。考虑到航天器的通信链接的安全性，理论和数值结果都证明了提出的物理层密钥生成过程的有效性和实用性。
We propose a novel physical layer secret key generation method for the inter-spacecraft communication links. By exploiting the Doppler frequency shifts of the reciprocal spacecraft links as a unique secrecy source, spacecrafts aim to obtain identical secret keys from their individual observations. We obtain theoretical expressions for the key disagreement rate (KDR). Using generalized Gauss-Laguerre quadrature, we derive closed form expressions for the KDR. Through numerical studies, the tightness of the provided approximations are shown. Both the theoretical and numerical results demonstrate the validity and the practicality of the presented physical layer key generation procedure considering the security of the communication links of spacecrafts.
