强信号覆盖约束下移动无线传感网频谱微弱信号检测  

Spectrum Weak Signal Detection in Mobile Wireless Sensor Networks with Strong Signal Coverage Constraints

作　　者：黄继文[1] 张学军[2] HUANG Jiwen;ZHANG Xuejun(School of Artificial Intelligence,Nanning College for Vocational Technology,Nanning Guangxi 530008,China;School of Computer,Electronics and Information,Guangxi University,Nanning Guangxi 530004,China)

机构地区：[1]南宁职业技术学院人工智能学院,广西南宁530008 [2]广西大学计算机与电子信息学院,广西南宁530004

出　　处：《传感技术学报》2023年第5期776-781,共6页Chinese Journal of Sensors and Actuators

基　　金：广西科技重大专项项目(桂科AA21077007)。

摘　　要：移动无线传感网中的微弱信号在强信号的覆盖下,基础检测特征消失,形成检测难点,不利于信号传输。提出了一种移动无线传感网频谱微弱信号检测方法。明确移动无线传感网频谱监测原理,获取与弱信号属性相反的强信号,并利用空间谱估计消除强信号,使移动无线传感网频谱监测过程仅剩目标检测对象。利用信号幅值波动装置检测快拍间起伏特性明显的弱信号,实现移动无线传感网频谱监测微弱信号的检测。仿真分析表明,这种方法的检测结果与实际结果吻合,噪声环境中受噪声的干扰影响为0.012 dB,实现了较高质量的移动无线传感网传输。The basic detection features of weak signals in mobile wireless sensor networks disappear under the coverage of strong signals,causing detection difficulties,which is not conducive to signal transmission.A method for detecting weak signals in mobile wireless sensor networks is proposed.The spectrum monitoring principle of mobile wireless sensor network is defined,strong signals that are opposite to weak signal attributes are obtained,and spatial spectrum estimation is used to eliminate strong signals,so that only target detection objects are left in the spectrum monitoring process of mobile wireless sensor network.Using the signal amplitude fluctuation device to detect weak signals with obvious fluctuation characteristics between snapshots fultills the detection of weak signals in mobile wireless sensor network spectrum monitoring.The simulation shows that the detection results of the proposed method are consistent with the actual results.The interference of noise in noisy environment is 0.012 dB,and high-quality mobile wireless sensor network transmission is realized.

关 键 词：移动无线传感网 微弱信号 频谱监测 空间谱估计 信号幅值波动装置 

分 类 号：TP391.8[自动化与计算机技术—计算机应用技术]