Davide Margaria

Davide Margaria
LINKS Foundation · Connected Systems & Cybersecurity (CSC)

M.Sc.

About

62
Publications
3,902
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
523
Citations
Introduction
Davide Margaria received his B.Sc. and M.Sc. degrees in Telecommunication Engineering from Politecnico di Torino in 2003 and 2007, respectively. He currently works as a senior researcher within the Connected Systems & Cybersecurity research domain of LINKS Foundation. His current research activities focus on cybersecurity solutions for Cyber-Physical Systems in the Industry 4.0 paradigm and on cryptographic protocols for Zero-Knowledge Proof (ZKP) and Verifiable Credentials (VCs).
Additional affiliations
November 2020 - November 2021
LINKS Foundation
Position
  • Senior Researcher
January 2019 - October 2020
LINKS Foundation
Position
  • Senior Researcher
July 2011 - December 2018
Istituto Superiore Mario Boella (ISMB)
Position
  • Senior Researcher

Publications

Publications (62)
Article
The definition of new families of curves named interference error envelope (IEE) and interference running average (IRA) is presented. Such tools are able to assess the impact of RF interference on different GNSS receivers, taking into account the features of the in-band interference source. In fact the actual impact on the final performance is stri...
Article
Full-text available
A novel cooperative integrity monitoring concept, called "local integrity", suitable to automotive applications in urban scenarios, is discussed in this paper. The idea is to take advantage of a collaborative Vehicular Ad hoc NETwork (VANET) architecture in order to perform a spatial/temporal characterization of possible degradations of Global Navi...
Chapter
Reliable positioning and navigation is becoming imperative in more and more applications for public services, consumer products, and safety-critical purposes. Research for finding pervasive and robust positioning methodologies is critical for a growing amount of societal areas while making sure that navigation is trustworthy and the risks and threa...
Article
A key aspect to be considered in the design of new generations of global navigation satellite system (GNSS) signals and receivers is a proper partition between system and receiver contribution to the robustness against spoofing attacks. This article maps the current threats and vulnerabilities of GNSS receivers and presents a survey of recent defen...
Article
Full-text available
The protection of satellite-derived timing information is becoming a fundamental requirement in Industry 4.0 applications, as well as in a growing number of critical infrastructures. All the industrial systems where several nodes or devices communicate and/or coordinate their functionalities by means of a communication network need accurate, reliab...
Article
Following the issue by the Galileo Service Center of the Notice Advisory to Galileo Users (NAGU) reporting Service Outage for all the Galileo satellites, as curious Galileo users our team of researchers of the NavSAS group started an independent investigation of the received signals in space (SISs). Available at: https://www.gpsworld.com/why-gali...
Chapter
This chapter discusses the fundamentals of satellite navigation. It introduces the fundamentals of the global position estimation using time‐of‐arrival estimation of signals received from a cluster of satellites. The chapter assesses the impact of the satellite constellation geometry on the global positioning accuracy. It presents an overview of cu...
Article
Many infrastructures that shape our lifestyle depend on the GPS. Even though not used for positioning, these infrastructures need GPS to derive a precise time synchronization necessary for their operations. Examples are power distribution grids, gateways for financial transactions, and telecommunication networks. However, GPS receivers, and more in...
Conference Paper
This paper describes the generalization of a method for the estimation of the reliability of the positioning information provided by consumer-grade devices exploiting the Global Positioning System (GPS) and the other Global Navigation Satellite Systems (GNSS) in a wide range of situations and environments. Principles are introduced, and a descripti...
Conference Paper
This paper presents the results of a demonstration based on the use of the Navigation Message Authentication (NMA) technique, which represents an effective countermeasure against counterfeit Global Navigation Satellite System (GNSS) signals and is one of the possibilities considered for the adoption by Galileo. An intermediate spoofing attack has b...
Conference Paper
A proof-of-concept demonstrator of a cooperative integrity monitoring concept, called “local integrity” and tailored to terrestrial applications, is presented in this paper. The idea is to take advantage of a collaborative Vehicular Ad-hoc NETwork (VANET) architecture in order to perform a spatial/temporal characterization of possible local degrada...
Chapter
Reliable positioning and navigation is becoming imperative in more and more applications for public services, consumer products, and safety-critical purposes. Research for finding pervasive and robust positioning methodologies is critical for a growing amount of societal areas while making sure that navigation is trustworthy and the risks and threa...
Chapter
Reliable positioning and navigation is becoming imperative in more and more applications for public services, consumer products, and safety-critical purposes. Research for finding pervasive and robust positioning methodologies is critical for a growing amount of societal areas while making sure that navigation is trustworthy and the risks and threa...
Conference Paper
The paper presents a novel strategy capable to effectively mitigate possible false locks of the receiver tracking stage in case of multi-peak code correlation functions, as for example high-order Binary Offset Carrier (BOC) modulations, used in modern Global Navigation Satellite System signals (e.g. Galileo and modernized GPS). The proposed strateg...
Conference Paper
This tutorial paper highlights possible issues related to the integrity and authentication of the GNSS position in road applications. In fact, the Global Navigation Satellite System (GNSS) community is already aware of the conceptual and practical problems related to the availability of the position integrity (i.e. position confidence, protection l...
Conference Paper
The paper presents a new multipath mitigation strategy suitable to current Global Navigation Satellite System signals (e.g. Galileo and modernized GPS), including high order Binary Offset Carrier (BOC) modulated signals. The proposed strategy differs from the other approaches in the state of the art, based on the same number of correlators (five):...
Conference Paper
This paper proposes a novel concept of “local integrity” suitable to Global Navigation Satellite System (GNSS) receivers in urban vehicular scenarios. The idea is to take into account not only the system, but also the environment nearby the receiver in its nominal conditions, exploiting the potentialities offered by a Vehicular Ad-hoc Network (VANE...
Conference Paper
In recent years, research activities in the field of Satellite Navigation have boosted worldwide. At the same time, it has become evident that few educational opportunities in the field were available for students and there was a need to develop dedicated tools for hands-on sessions. To partially answer this need, the NavSAS Group has developed N-F...
Patent
Domanda di brevetto per invenzione industriale depositata il 29 luglio 2013, Proprietario del brevetto SELEX ES S.P.A. Url: http://www.uibm.gov.it/uibm/dati/Avanzata.aspx?load=info_list_uno&id=2176457&table=Invention&#ancoraSearch
Conference Paper
This paper discusses some technical problems and proposes a solution related to the implementation of a robust switching between single-side and double-side lobe tracking modes in case of BOC modulated signals, in particular BOC(M,N), with M, N ensuremath> 1. It is demonstrated that typical group delay distortions due to wide-band front-end filters...
Conference Paper
GLOVE [1] is a European project (funded by the GNSS Supervisory Authority) which addresses the mutual benefits coming from the cross-domain integration between GNSSs (Global Navigation Satellite Systems) - in particular Galileo - and VANETs (Vehicular Ad-Hoc Networks) based on ITS-G5 [2]. Such integration is already foreseen on vehicular On-Board U...
Conference Paper
The aim of this paper is to present a complete experimental assessment of the Galileo signals received from the new In-Orbit Validation satellites on both the E1 and the E5 bands. The experimental setup used in order to separately receive and process E1, E5a and E5b civil signals is presented and performance results in terms of signal acquisition a...
Article
Full-text available
An assessment of the Galileo In-Orbit Validation (IOV) signals on the E5 band is presented in this paper, investigating the signal features compared with the expected characteristics as described in the Galileo Interface Control Document (ICD) specifications. In detail, the re-sults in terms of signal acquisition and tracking during multiple satell...
Article
Full-text available
One of the most promising features of the modernized global navigation satellite systems signals is the presence of pilot channels that, being data-transition free, allow for increasing the coherent integration time of the receivers. Generally speaking, the increased integration time allows to better average the thermal noise component, thus improv...
Chapter
This chapter focuses on various satellite-based navigation systems. The most well-known and widespread system currently used for localization of a radio-receiving terminal is the global positioning system (GPS). All GPS satellites share the same frequency bands, making use of the code division multiple access (CDMA) technique. The transmitted signa...
Conference Paper
Full-text available
The aim of this paper is to present an acquisition strategy for Global Navigation Satellite System (GNSS) signals exploiting aiding information provided by GNSS receivers in a Peer-to-Peer (P2P) positioning system. This work sheds light on the benefits of sharing information regarding the received satellite signal power: the Carrier-to-Noise densit...
Article
Global Navigation Satellite Systems (GNSS) with the ability to provide accurate positioning and timing information have become very important for many essential applications of both military and civil purposes. The upcoming European GNSS, Galileo system, foresees providing new advanced signals aiming to improve the receiver sensitivity. Towards the...
Conference Paper
This paper presents the main features of NFUELS (FUll Educational Library of Signals for Navigation), a signal simulator designed to offer young researchers and students a complete, flexible and intuitive software tool able to offline reproduce and analyze GNSS signals as they appear at the Analog to Digital Converter output of a navigation receive...
Conference Paper
Full-text available
Aim of this paper is to investigate the benefits of different P2P aiding information related to the satellites in view on an acquisition strategy tailored to Galileo E1 receivers. The basic idea is to perform an aided acquisition, suitable to a mass-market receiver, based on a secondary code wipe-off on the received signal and exploiting the period...
Article
Full-text available
Navigation/positioning platforms integrated with wireless communication systems are being used in a rapidly growing number of new applications. The mutual benefits they can obtain from each other are intrinsically related to the interoperability level and to a properly designed coexistence. In this paper a new family of curves, called Interference...
Conference Paper
This paper presents an assessment study of the impact of the spreading code properties in the reception of Galileo E1 Open Service (OS) and GPS L1C Multiplexed Binary Offset Carrier (MBOC) signals. The distortion of the discrimination function due to codes cross-correlations properties is analyzed, considering the features of the modulation schemes...
Conference Paper
In this paper we propose an innovative multifrequency and low-cost Software Defined Radio receiver architecture able to track new and/or modernized Global Navigation Satellite System (GNSS) signals, focusing on GPS L5 (at the moment transmitted only from IIR-20M GPS satellite, SVN 49, PRN 63). The main advantages of the proposed architecture are: •...
Conference Paper
In a short time new demanding applications, as for instance financial and life critical timing and positioning services, will be included in the plethora of uses of new Global Navigation Satellite System (GNSS). They will require the ability to restrict access to some class of protected information by the user position meaning, provided by some GNS...
Conference Paper
A constantly increasing number of new applications are based on wireless communication system integrated with navigation/positioning platforms. The mutual benefits they can obtain from each others are intrinsically related to the interoperability level and to a properly designed coexistence. In this paper a new family of curves, called Interference...
Conference Paper
Aim of this paper is to present an interference impact assessment in the context of Global Navigation Satellite Systems (GNSS), focusing on the new modulations based on the Multiplexed Binary Offset Carrier (MBOC) scheme that will be used for modernized GPS LlC and Galileo El civil signals. Simulation results are presented and discussed in order to...
Conference Paper
The growth of new location-based applications, the improvements in receiver technologies, as well as the availability of new Global Navigation Satellite System (GNSS) signals, increase the expectations for positioning and timing performance. Recent applications foresee the use of commercial Global Positioning System (GPS) receivers in challenging e...
Article
Herein, some critical aspects related to the acquisition of the future Galileo signals are discussed. In particular, the Alternative Binary Offset Carrier (AItBOC) modulation that will be used by the Galileo satellites to broadcast navigation signals on the E5 band is considered, addressing acquisition issues only partially analyzed in previous wor...
Conference Paper
The significant growth of the number of applications based on position information and navigation technology is one of the reasons that pushed the investigation of methods for evaluating the signal robustness and reliability. Among the several aspects to be investigated when comparing different signals performance, the robustness to multipart effec...
Conference Paper
The extremely low signal-to-noise ratio experienced indoors impairs the acquisition stage of common GPS receivers, since reliable correlation peaks are hardly detected. The optimal strategy to increase the acquisition sensitivity is the extension of the coherent integration time, but the presence of data bits limits the maximum achievable performan...
Conference Paper
In a GNSS receiver the measure of the carrier to noise power density ratio (CNo) is not only a measure of the strength of the received signal, but is also used to determine the lock condition of the carrier and tracking loops and to control the channel scheduling. This paper investigates the possibility of implementing various low complexity C/No e...
Conference Paper
The function of the front-end of a global navigation satellite system (GNSS) receiver can be roughly described as the provision of received signal samples at intermediate frequency (IF) to the base band section. Due to the low power of the received signal, several phenomena might threat the correct operation of the front-end, and consequently degra...

Projects

Project (1)
Project
ROOT aims to assess the benefits introduced by the Galileo authenticated signals (OSNMA) in the specific context of synchronization of 5G telecommunications networks. Specifically, ROOT purpose is to estimate the increased resilience that OSNMA can bring to GNSS-based timing sources. This is obtained through an experimental approach which enables the measurement of the increased level of robustness provided by the use of a mix of emerging technologies. Project website: www.gnss-root.eu