考虑基带噪声干扰的光纤传感通信信号隐匿传输方法  

A Stealth Transmission Method for Optical Fiber Sensor Communication Signals Considering Baseband Noise Interference

作　　者：赵攀峰 王一群 ZHAO Panfeng;WANG Yiqun(Campus Construction Management Office,Renmin University of China,Beijing 100872,China;College of Automation,Beijing Information Science and Technology University,Beijing 100872,China)

机构地区：[1]中国人民大学校园建设管理处,北京100872 [2]北京信息科技大学自动化学院,北京100872

出　　处：《传感技术学报》2023年第4期602-607,共6页Chinese Journal of Sensors and Actuators

基　　金：北京市教育委员会科学研究计划项目(KM202011232023)。

摘　　要：光纤传感通信技术是以光波为载体,利用光纤传播信息的通信方式。但在隐匿传输过程中易受信号强度、基带噪声、传感器性能等因素的影响,导致信号数值波动大、传输精度低。因此,提出考虑基带噪声干扰的光纤传感通信信号隐匿传输方法。采用局域波分解技术剔除信号中的基带噪声,根据压缩感知技术对信号实行一层压缩处理,利用随机投影算法实现信号的二层压缩与重构,并通过计算信号的传送数据向量与接收数据向量,完成光纤传感通信信号的隐匿传输。仿真结果表明,所提方法的序列估计误差最小值为0.17,引入噪声后信号序列相关峰均比高达89 dB,误码率控制在0.5%,安全容量始终高于2.7 bit/s,匿名度为0.62,具有较好的隐匿传输效果。Optical fiber sensing communication technology is a communication mode that uses optical fiber to transmit information,taking light wave as the carrier.However,it is vulnerable to signal strength,baseband noise,sensor performance and other factors in the hidden transmission process,resulting in large signal value fluctuations and low transmission accuracy.Therefore,a stealth transmission method of optical fiber sensor communication signal considering baseband noise interference is proposed.The local wave decomposition technology is adopted to eliminate baseband noise in the signal.According to the compression sensing technology,the signal is compressed in the first layer.The random projection algorithm is used to realize the two⁃layer compression and reconstruction of the signal.By calculating the transmission data vector and the reception data vector of the signal,the hidden transmission of the optical fiber sensing communication sig⁃nal is completed.The simulation results show that the minimum sequence estimation error of the proposed method is 0.17,the peak to aver⁃age correlation ratio of the signal sequence after the introduction of noise is as high as 89 dB,the bit error rate is controlled at 0.5%,the security capacity is always higher than 2.7 bit/s,and the anonymity is 0.62.The proposed method has a good hidden transmission effect.

关 键 词：光纤传感通信 信号隐匿传输 局域波分解技术 基带噪声干扰 三次样条插值 信号压缩感知 随机投影 信号重构 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]