火力与指挥控制2024，Vol.49Issue(6)：116-121,6.DOI:10.3969/j.issn.1002-0640.2024.06.016
基于WFRFT的噪声式隐蔽传输方案研究
Research on Noise Type Covert Transmission Scheme Based on WFRFT
摘要
Abstract
Covert wireless communication aims to realize the hidden transmission of information between the two parties to ensure the security of information.A kind of chaotic spread spectrum noise signal convert communication method based on weighted fractional Fourier transform is proposed.In this method,two different chaotic sequences generated by the improved Logistic mapping are used for symbolic spread spectrum of covert signals,and then weighted fractional Fourier transform is used to generate noise type covert signals.The covert signals will be superimposed on the overt signals by the sender to make simultaneous transmission,and the synchronization problems can be solved by the overt signals.The processed covert signal has the characteristics of low energy and Gaussian-like,which can be well confused with the background noise,and has strong covertness and anti-interception ability.The simulation results show that the proposed method has better convert performances,The symbol error rate of the method is consistent with the theoretical derivation.And when the power ratio is between 0.007 and 0.01,the covert signals and the overt signals can both achieve good symbol error rate.关键词
隐蔽通信/符号扩频/加权分数傅里叶变换/隐蔽特性Key words
covert communication/symbol spread-spectrum/weighted fractional Fourier transform/covered characteristics分类
信息技术与安全科学引用本文复制引用
刘凯,查仁杰..基于WFRFT的噪声式隐蔽传输方案研究[J].火力与指挥控制,2024,49(6):116-121,6.基金项目
国家重点研发计划基金(2022YFB2902005) （2022YFB2902005）
上海市科委创新行动计划基金资助项目(22511100604) （22511100604）
