Location verification is an effective solution to improve the security of location service in wireless network.Therefore,a location verification system based on time of arrival(TOA) is proposed with far field approximation model,which is marked as TOA-LVS.In TOA-LVS,detection decision rule is deduced by LVS.Then the formula of false positive and detection rate of TOA-LVS is derived by using far field approximation model.Finally,simulation results show that the derived formula of false positive and detection rates is correct.Moreover,compared with received signal strength(RSS)-based LVS,results show that the perfamence of proposed TOA-LVS in terms of detection ratio,normalized mutual information,and error ration is better than RSS-LVS.%位置验证是提高无线网络中位置服务安全的有效方案.为此,提出基于到达时间(TOA,time of arrival)的位置验证系统(LVS,location verification system),记为TOA-LVS.在TOA-LVS中,首先依据LVS,推导决策规则,随后采用FFA(far field approximation)模型,导出TOA-LVS的虚警率和检测率的表达式.最后,通过仿真,验证所推导的虚警率和检测率表达式的正确性,并与基于接收信号强度(RSS,received signal strength)的LVS(RSS-LVS)比较,结果表明提出的TOA-LVS在检测率、归一化信息熵以及错误率方面均优于RSS-LVS.
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