CAJ | 학술논문

网络攻击源在混合Rayleigh-Rician信道下，具有慢变衰落特性，描述这种慢变衰落特性，对攻击源的多普勒频移进行离散化处理，可以实现对网络攻击源的准确定位和信道拦截。提出一种基于随机近场谱混叠的网络攻击源慢变衰落仿真模型，首先进行系统和信号模型构建，在相干点积功率累积尺度坐标中，得到空间采样的不确定性增量，提取网络攻击源随机近场谱特征。采用混叠谱估计方法构建多源近场攻击源的慢变衰落状态模型。仿真表明，算法能有效描述网络攻击源的慢变衰落特性，层析结构特征明显，定位均方根误差较传统方法减小。
망락공격원재혼합Rayleigh-Rician신도하，구유만변쇠락특성，묘술저충만변쇠락특성，대공격원적다보륵빈이진행리산화처리，가이실현대망락공격원적준학정위화신도란절。제출일충기우수궤근장보혼첩적망락공격원만변쇠락방진모형，수선진행계통화신호모형구건，재상간점적공솔루적척도좌표중，득도공간채양적불학정성증량，제취망락공격원수궤근장보특정。채용혼첩보고계방법구건다원근장공격원적만변쇠락상태모형。방진표명，산법능유효묘술망락공격원적만변쇠락특성，층석결구특정명현，정위균방근오차교전통방법감소。
The source of network attack is shown in a mixed Rayleigh-Rician channel, it has slow fading characteristics. With describe the slow fading, Doppler frequency shift to attack source, it can realize accurate positioning and channel of network attack source interception. A slow fading simulation method of network attack source is proposed based on random near field spectrum aliasing. The system and signal model is constructed, in the coherent point integrated power accumula?tion scale coordinates, the uncertainty incremental spatial sampling is obtained. The network attack source random near field spectrum is extracted. The aliasing spectrum estimation method is used to construct the slow attack source near field multi-source fading state model. Simulation results show that the algorithm can effectively describe the slow fading charac?teristics of network attack source, the tomography structure characteristics is obvious, it can reduce the positioning of root mean square, the error is less than traditional methods.