The invention discloses a probabilistic interference unmanned aerial vehicle auxiliary wireless covert communication method and system. The method comprises the following steps: constructing a transmission model and a communication process of the communication system; obtaining a signal received by the UAV, a forwarding signal of the UAV and a forwarding amplification coefficient according to the transmission model and the communication process; in the signal forwarding process, a detector judges whether the UAV has signal forwarding or not by analyzing a transmitting signal of the UAV; carrying out binary hypothesis testing by a detector according to the received signal, and obtaining two detection error probability expressions of Willie according to a Neyman-Pearson optimal decision rule; under the condition that the hiding constraint condition is met, the target node can obtain the effective hiding rate, an optimization problem is constructed, and the optimization problem is solved to obtain the maximum hiding rate; a source node function is designed, probabilistic interference is sent by the source node to confuse detection of a detector, transmission of secret information is assisted, system performance is improved through concealment performance constraint, and the final concealment rate which can be obtained is maximized.
本发明公开一种概率性干扰的无人机辅助无线隐蔽通信方法及系统,方法包括以下步骤:构建所述通信系统的传输模型和通信过程;根据传输模型和通信过程得到UAV收到的信号、UAV的转发信号以及转发放大系数;信号转发过程中检测者通过分析UAV的发射信号判断UAV是否有信号转发;检测者根据收到的信号进行二进制假设检验,根据奈曼‑皮尔逊最优决策规则得到Willie的两种检测错误概率表达式;在满足隐蔽约束条件下目的节点能够获得的有效隐蔽速率,构建优化问题,解算所述优化问题得到最大化的隐蔽速率;设计源节点功能,让其发送概率性干扰来混淆检测者的检测,用来援助秘密信息的传输,通过隐蔽性能约束来提高系统性能,最大化所能获得的最终隐蔽速率。
Probabilistic interference unmanned aerial vehicle auxiliary wireless covert communication method and system
一种概率性干扰的无人机辅助无线隐蔽通信方法及系统
2024-11-26
Patent
Electronic Resource
Chinese
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