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Unmanned aerial vehicle relay covert communication method for flight listener

A covert communication and communication method technology, which is applied in the field of unmanned aerial vehicle relay covert communication for flyable listeners, and can solve problems such as covert communication covert threats

Active Publication Date: 2021-06-11
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When eavesdroppers can fly, they can use better channel conditions and better listening positions for detection, so that the concealment of covert communication is greatly threatened

Method used

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  • Unmanned aerial vehicle relay covert communication method for flight listener
  • Unmanned aerial vehicle relay covert communication method for flight listener
  • Unmanned aerial vehicle relay covert communication method for flight listener

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0053] In order to better understand the above technical solutions, a specific analysis is given below in conjunction with the accompanying drawings and specific implementation manners.

[0054] A long-distance covert communication method based on multi-antenna and UAV relay assistance for UAV flyable monitors. The method first lists the source signal and relay The reception of the signal, by analyzing the power value of the signal received by the receiver in the source or relay in the transmission information and idle state, find out the best distinguishing detection threshold to determine whether the source or relay is transmitting the signal Make the judgment with the highest accuracy; on this basis, analyze the floating position of the UAV listener, so as to maximize the sum of the accuracy of its judgment on whether the source and the relay transmi...

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Abstract

The invention relates to an unmanned aerial vehicle relay covert communication method for a flight listener, which comprises the following steps of: firstly listing the receiving conditions of a movable unmanned aerial vehicle listener on an information source signal and a relay signal, finding out an optimal distinguishing detection threshold value, and judging whether an information source or a relay carries out signal transmission or not with the highest accuracy rate; and analyzing the suspension position of the unmanned aerial vehicle monitor, so that the sum of the accuracy of judging whether the information source and the relay transmit information is maximized. Afterwards, under the worst covert communication situation for legal users, an information source end utilizing multi-antenna channel precoding to realize maximum rate transmission, a relay end utilizing signal transmitting power Gaussian to introduce interference to a listener, and jointly optimizing the transmitting power of an information source and a relay and the number of limited word lengths, so that the transmission rate of the effective information source and information sink is maximized. According to the method, a value reference method can be provided for maximizing the effective transmission rate of the information source end and the information sink end on the premise of ensuring that the interruption probability of covert communication does not exceed a set value.

Description

technical field [0001] The invention belongs to the technical field of wireless communication network user information security, and relates to a security transmission strategy in which the sender uses multi-antennas and unmanned aerial vehicles to relay Gaussianized transmission signal power to assist against listeners. The human-machine eavesdropper adopts multiple antennas at the sending end to maximize the rate of transmission and assists in relaying Gaussian signal transmission with the UAV to achieve long-distance covert communication. By jointly optimizing the finite length data packets and transmit power at the sender and relay, the effective transmission rate is maximized while ensuring that the probability of error detection is not less than a certain value. Background technique [0002] As wireless communication is more and more closely related to human life, information security issues caused by the broadcast characteristics of wireless signals have also attracte...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04W24/02H04B7/15
CPCH04W12/02H04W24/02H04B7/15Y02D30/70
Inventor 陈新颖赵楠刘明骞邹德岳陈炳才
Owner DALIAN UNIV OF TECH
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