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Performance Analysis of a Civilian GPS Position Authentication System

机译:GPS民用位置认证系统的性能分析

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摘要

A position authentication method utilizing the white-noise-like GPS spreading codes as tamper proof watermarks is described. In this method a segment of the GPS signal collected by a trusted user (the authenticator) is used as a template. Another user whose position and time report needs to be verified (the supplicant) sends a sample of its signal. The supplicant's sample is compared with the authenticator's template. The absence of a correlation peak between the two signals indicates that the supplicant is using a non-authentic GPS signal. A correlation peak having a delay that is inconsistent with relative range between supplicant and authenticator indicates a falsification of the position or time report. Analysis, simulation and experimental results documenting the system's performance are presented. These results show that this approach can detect a deceptive position report with a resolution of 15 meters (1-sigma) or better.
机译:描述了一种利用类似白噪声的GPS扩展码作为防篡改水印的位置认证方法。在这种方法中,由受信任的用户(身份验证者)收集的GPS信号的一部分用作模板。需要验证其位置和时间报告的另一个用户(请求方)发送其信号样本。将请求者的样本与验证者的模板进行比较。两个信号之间没有相关峰,表明请求者正在使用非真实GPS信号。具有与请求者和认证者之间的相对范围不一致的延迟的相关峰指示位置或时间报告的伪造。给出了记录该系统性能的分析,仿真和实验结果。这些结果表明,这种方法可以检测到分辨率为15米(1-sigma)或更佳的欺骗性位置报告。

著录项

  • 来源
    《Navigation》 |2013年第4期|249-265|共17页
  • 作者单位

    University of Minnesota, Twin Cities Campus, Minneapolis, MN;

    University of Minnesota, Twin Cities Campus, Minneapolis, MN;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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