Unmanned aerial vehicle covert communication method and device

Abstract

The invention discloses an unmanned aerial vehicle covert communication method and device, and the method and device are good in concealment performance during communication. The method comprises the following steps: (10) acquiring communication parameters: acquiring the communication parameters required by covert communication; (20) calculating the minimum signal-to-noise ratio of the receiver: calculating the signal-to-noise ratio when the ground receiver can meet the minimum effective throughput according to the minimum effective throughput required by communication between the unmanned aerial vehicle and the ground receiver and the code length of the sent message; (30) calculating the optimal position of the unmanned aerial vehicle: calculating the optimal position of the unmanned aerial vehicle according to the communication parameters and the minimum signal-to-noise ratio of the receiver; (40) calculating the optimal transmitting power of the unmanned aerial vehicle: calculating the optimal transmitting power of the unmanned aerial vehicle according to the distance from the unmanned aerial vehicle to the ground receiver, the minimum signal-to-noise ratio of the receiver and the channel gain between the unmanned aerial vehicle and the ground receiver; and (50) carrying out covert communication, wherein the unmanned aerial vehicle sends a message to a ground receiver at the optimal position at the optimal transmitting power.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method and device for covert communication of an unmanned aerial vehicle. Background technique [0002] Due to the inherent broadcast characteristics of wireless transmission, the security issues of wireless communication are increasingly concerned. Traditional cryptography protects transmitted information from eavesdroppers by encrypting the information into ciphertext. However, encrypted messages still have the risk of being intercepted and decrypted. In this case, covert communication becomes an important technology to ensure the security of information transmission. The covert communication at the physical layer can use technologies such as noise, artificial noise, and power control to make it impossible for the listener to determine whether the two parties are communicating, thereby concealing the communication behavior. [0003] For the UAV n...

AI Technical Summary

Problems solved by technology

[0005] In short, the problem existing in the prior art is that the concealment performance of the UAV covert communication system is not good enough

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