成都大学学报（自然科学版）2024，Vol.43Issue(2)：160-165,6.DOI:10.3969/j.issn.1004-5422.2024.02.007
基于三步迭代滤波器的缓变型时间同步攻击防护方案
Protective Scheme of Slowly-Varying Time Synchronization Attacks Based on Three-Step Iterative Filter
摘要
Abstract
For the case where the satellite receiver may suffer from a slowly-varying time synchronization attack caused by forwarding spoofing,a protective scheme based on three-step iterative filter is proposed and demonstrated.In this scheme,a slow time synchronization attack model and a slow time synchroniza-tion attack awareness model are introduced,and then the clock bias and drift of the slow time synchroniza-tion attack awareness model are estimated by using three-step iterative filter,and finally the estimated clock bias and drift are corrected via the correction model.Simulation results show that the proposed scheme can detect the slowly-varying time synchronization attack in time within 1s and effectively sup-press it,and reduce the influence of time synchronization attack on timing accuracy.关键词
三步迭代滤波器/缓变型/时间同步攻击/卫星授时Key words
three-step iterative filter/slowly-varying/time synchronization attack/satellite timing分类
信息技术与安全科学引用本文复制引用
刘钰沐,张林秀,黄建刚,罗正华,李城鑫..基于三步迭代滤波器的缓变型时间同步攻击防护方案[J].成都大学学报（自然科学版）,2024,43(2):160-165,6.基金项目
四川省科技计划项目(2021YFG0361、2023YFS0426) （2021YFG0361、2023YFS0426）
