一种用于动态应用程序的欺骗缓解技术

M. Berardo, Esteban Garbin Manfredini, F. Dovis, L. Presti
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引用次数: 6

摘要

全球卫星导航系统(GNSS)是一项普及的技术,广泛应用于航空、铁路、航海和道路导航等领域。因此,正在创建越来越多的应用程序,并且有必要保护GNSS接收器免受恶意攻击,以保证导航解决方案的可靠性。在这项工作中,提出了一种新的GNSS欺骗攻击检测和缓解算法。该算法结合了信号处理层面的技术,旨在提高定位方案的连续性、可用性和可靠性。这个想法是在继续提供通过多普勒测量获得的可信位置的同时,检测并提出有关欺骗器存在的警告。校正过程估计真实信号和欺骗信号之间的相对延迟,并将接收机从欺骗信号中解锁,并将其重新锁定为真实信号。如果解锁过程成功,则接收器使用减轻的伪距离测量来计算位置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A spoofing mitigation technique for dynamic applications
Global Navigation Satellite System (GNSS) is becoming pervasive technology, widely used in many fields, like aviation, railway, maritime and road navigation systems. As a consequence an increasing number of applications are being created and it has become necessary to protect the GNSS receiver from malicious attacks, in order to guarantee the reliability of the navigation solution. In this work, a novel algorithm for GNSS spoofing attack detection and mitigation is proposed. This algorithm is a combination of techniques at signal processing level aiming at improving continuity, availability and reliability of the positioning solution. The idea is to detect and raise a warning about the presence of a spoofer while continuing to provide trusted position obtained by using Doppler measurements. A correction process estimates the relative delay between the true signal and the spoofer and unlocks the receiver from the spoofer and re-locks it to the true signal. If the unlocking process is successful, the receiver computes the position using mitigated pseudorange measurements.
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