Secure Access Authentication of Power Terminal Based on Multi-Channel Frequency Intensity

This paper analyzes the security issues in the smart grid. According to the characteristics of wireless signal transmission, combined with the existing physical layer authentication technology, we apply the physical layer authentication technology to resource-constrained power terminals, this paper proposes a device location fixed multi-channel frequency intensity authentication scheme. This scheme mainly utilizes the space-time uniqueness characteristics of the wireless channel when the location of the wireless device is fixed. The signal intensity of the device is used as the unique identification information of the wireless device. The similarity of channel characteristics is used to identify the device and determine whether it is legal. Tests show that this scheme has better recognition performance.