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首页> 外文期刊>Proceedings of the IEEE >Coding Aspects of Secure GNSS Receivers
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Coding Aspects of Secure GNSS Receivers

机译：安全GNSS接收器的编码方面

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This paper presents an overview of the coding aspects of a GNSS receiver. Coding allows detection and correction of channel-induced errors at the receiver, here the focus is on the mitigation of threats from malicious interferences. Although the effects of interference at different stages of GNSS baseband processing has been deeply analyzed in the literature, little attention was devoted to its impact on the navigation message decoding stage. Theis paper provides an introduction to the various coding schemes employed by current GNSS signals, discussing their performance in the presence of noise in terms of block-error rate. Additionally, the benefits of soft-decoding schemes for navigation message decoding are highlighted when jamming interferences are present. The proposed scheme requires estimating the noise plus interference power, yielding to enhanced decoding performances under severe jamming conditions. Finally, cryptographic schemes as a means of providing anti-spoofing for geosecurity location-based services, and their potential vulnerability are discussed, with particular emphasis on the dependence on the dependence of the scheme on successful navigation message decoding.
机译：本文概述了GNSS接收机的编码方面。编码允许在接收器处检测和纠正信道引起的错误，此处的重点是减轻恶意干扰带来的威胁。尽管在文献中已经对GNSS基带处理的不同阶段的干扰影响进行了深入分析，但很少关注其对导航消息解码阶段的影响。本文对当前GNSS信号采用的各种编码方案进行了介绍，并以误码率的形式讨论了在存在噪声的情况下其性能。另外，当存在干扰干扰时，突出显示了用于导航消息解码的软解码方案的优势。所提出的方案需要估计噪声加上干扰功率，从而在严重的干扰条件下获得增强的解码性能。最后，讨论了加密方案作为为基于地安服务的地理安全提供反欺骗的手段，以及它们的潜在漏洞，特别强调了对方案对成功导航消息解码的依赖的依赖性。

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