A combined symmetric difference and power monitoring GNSS anti-spoofing technique

Wesson, Kyle D.; Evans, Brian L.; Humphreys, Todd E.

doi:10.1109/globalsip.2013.6736854

Cited by 47 publications

(28 citation statements)

References 9 publications

(10 reference statements)

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“…Besides NMA, a number of promising methods are currently being developed to defend against civil GNSS spoofing attacks [5]- [10]. Nonetheless, NMA is unique in imposing minimal burden on a low-cost receiver: no hardware modifications are required and the increase in processing demands is negligible.…”

Section: Introductionmentioning

confidence: 99%

A blueprint for civil GPS navigation message authentication

Kerns

Wesson

Humphreys

2014

2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014

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Abstract-A proposal for civil GPS navigation message authentication (NMA) is presented with sufficient specificity to enable near-term implementation. Although previous work established the practicality and efficacy of NMA for civil GPS signal authentication, there remains a need for a detailed proposal that addresses several outstanding considerations regarding implementation. In particular, this paper (1) provides a definitive evaluation of the tradeoffs involved in the choice of cryptographic protocol, and (2) optimizes the placement of digital signature bits in the GPS CNAV message stream. By offering GPS engineers and policymakers a detailed blueprint for civil NMA, this work advances the possibility of NMA implementation on modernized civil GPS signals.

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Section: Introductionmentioning

confidence: 99%

A blueprint for civil GPS navigation message authentication

Kerns

Wesson

Humphreys

2014

2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014

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“…Other signal processing techniques are based on the distribution analysis of the correlator output [30]. There exist also signal quality monitoring techniques, which aim at detecting distortions in the correlation function via the use of ratio metric tests [31,32,33,34,35]. Other techniques are based on the time of arrival and other consistency checks.…”

Section: Types Of Spoofing Attacks and Countermeasuresmentioning

confidence: 99%

On the Use of a Feedback Tracking Architecture for Satellite Navigation Spoofing Detection

Manfredini

Dovis

2016

Sensors

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In this paper, the Extended Coupled Amplitude Delay Lock Loop (ECADLL) architecture, previously introduced as a solution able to deal with a multipath environment, is revisited and improved to tailor it to spoofing detection purposes. Exploiting a properly-defined decision algorithm, the architecture is able to effectively detect a spoofer attack, as well as distinguish it from other kinds of interference events. The new algorithm is used to classify them according to their characteristics. We also introduce the use of a ratio metric detector in order to reduce the detection latency and the computational load of the architecture.

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“…Spoofing attack is detected if this distribution considerably deviates from the standard form. The combined technique "sandwiches" an attacker between a correlation function distortion monitoring and a total in-band power monitoring (Wesson et al, 2013).…”

Section: Prior Anti-spoofing Methods On Tracking Loopmentioning

confidence: 99%

Advanced Anti-Spoofing Methods in Tracking Loop

2016

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The Global Positioning System (GPS) has become widespread in many civilian applications. GPS signals are vulnerable to interference and even low-power interference can easily spoof GPS receivers. In this paper, two techniques are proposed based on correlators and adaptive filtering to diminish the effect of spoofing on GPS-based positioning. The suggested algorithms are implemented in the tracking loop of the receiver. As a first method, a high-resolution correlator is utilised to avoid big parts of the influence of interference. To improve the results, a multicorrelator technique is also employed. In the second method, an adaptive filter is used for estimating the parameters of authentic plus spoof signals. Interference elimination is performed by subtracting the estimated conflict effects from the measured correlation function. These techniques provide easy-to-implement quality assurance tools for anti-spoofing. As a primary step, in this article, the proposed algorithms have been implemented in a Software Receiver (SR) to prove the concept of idea in multipath-free environments. K E Y WO R D S1. Anti-Spoofing.2. Adaptive filters. 3. Correlator. 4. Tracking loop.

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A combined symmetric difference and power monitoring GNSS anti-spoofing technique

Cited by 47 publications

References 9 publications

A blueprint for civil GPS navigation message authentication

A blueprint for civil GPS navigation message authentication

On the Use of a Feedback Tracking Architecture for Satellite Navigation Spoofing Detection

Advanced Anti-Spoofing Methods in Tracking Loop

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