短包隐蔽通信下抗检测-干扰式攻击策略  

Anti-detection-Jamming Attack Strategy Based on Short-Packet Covert Communications

作　　者：张凌瑄 鲁兴波 隋元松 卢辉 ZHANG Lingxuan;LU Xingbo;SUI Yuansong;LU Hui(Unit 32369 of PLA,Beijing 100043,China;Academy of Military Sciences of PLA,Beijing 100091,China;College of Field Engineering,Army Engineering University of PLA,Nanjing 210007,Chin)

机构地区：[1]32369部队,北京100043 [2]军事科学院,北京100091 [3]陆军工程大学野战工程学院,江苏南京210007

出　　处：《陆军工程大学学报》2024年第1期36-42,共7页Journal of Army Engineering University of PLA

基　　金：国家自然科学基金(62071486,61971474);北京市科技新星计划(Z201100006820121)。

摘　　要：为应对潜在的检测-干扰式恶意攻击,提出了一种基于短包隐蔽通信的抗检测-干扰攻击策略,通过隐藏无线传输行为的存在来实现抗干扰。考虑到干扰机采用Shewhart变点检测实时判断源节点的传输行为,当判决源节点正在传输数据包后启动人工干扰。为隐藏无线传输行为,源节点随机选择一个起始时刻以低功率、低速率传输有限长编码数据包。数据包发送功率越小、编码长度越短,隐蔽性越强,抗检测-干扰式攻击性能越好,但发送功率小和编码长度短使得接收端数据包译码错误概率较大。以有效传输速率最大为目标对数据包发送功率和编码长度进行优化设计。结果表明,存在最优的发送功率和编码长度使系统在传输隐蔽性和可靠性之间取得最优折衷。数值仿真结果验证了理论分析,证明了所提方案的有效性以及优化数据包编码长度和发送功率的必要性。The anti-detection-jamming attack strategy based on short-packet covert communications is proposed to deal with the potential detection-jamming attack by hiding the existence of wireless transmission behavior.Considering that the Shewhart change-point detection is adopted to judge the transmission behavior of the source node in real time,the jammer launches the artificial noise when the source node is judged to be transmitting packets.In order to hide the wireless transmission behavior,the source node randomly selects a starting time to transmit data packets with a low-power,low-rate and finite blocklength.Intuitively,the lower packet transmit power and the shorter block-length,the stronger concealment and the better anti-detection-jamming attack.However,the lower transmit power and the shorter block-length make the decoding error probability of packets at the receiver higher.Therefore,the transmit power and block-length of packets are optimized to maximize the effective transmission rate.As such,the optimal transmit power and block-length make the system achieve the optimal compromise between the transmission covertness and reliability.Numerical simulation results verify the theoretical analysis,demonstrating the effectiveness of the proposed scheme and the necessity to optimize the packet block-length and transmit power.

关 键 词：短包通信 隐蔽通信 检测-干扰攻击 Shewhart变点检测 最优包长 

分 类 号：TN973.3[电子电信—信号与信息处理]