Alex Minetto

Alex Minetto
Politecnico di Torino | polito · DET - Department of Electronics and Telecommunications

Ph.D.

About

46
Publications
6,437
Reads
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269
Citations
Citations since 2016
44 Research Items
269 Citations
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Introduction
Alex is Post-doc researcher at the Department of Electronics and telecommunications of Politecnico di Torino within the Navigation Signal Analysis and Simulation (NavSAS) research group. He received the M.Sc. in Telecommunications Engineering at Politecnico di Torino, in 2015, and the Ph.D. in Electrical, Electronics and Communication Engineering in 2020. His research mainly covers advanced signal processing GNSS-based cooperative positioning algorithms in multi-agent systems.
Additional affiliations
November 2019 - June 2020
Politecnico di Torino
Position
  • PostDoc Position
Education
November 2016 - April 2020
Politecnico di Torino
Field of study
  • Electrical, Electronics and Communications Engineering
September 2013 - December 2015
Politecnico di Torino
Field of study
  • Telecommunication Engineering - Information Theory and Digital Signal Processing

Publications

Publications (46)
Preprint
p>Radio Frequency (RF) signals transmitted by Global Navigation Satellite Systems (GNSS) are exploited as signals of opportunity in many scientific activities, ranging from sensing waterways and humidity of the terrain to the monitoring of ionospheric irregularities. The latter can be pursued by processing the GNSS signals through dedicated ground-...
Preprint
p>Radio Frequency (RF) signals transmitted by Global Navigation Satellite Systems (GNSS) are exploited as signals of opportunity in many scientific activities, ranging from sensing waterways and humidity of the terrain to the monitoring of ionospheric irregularities. The latter can be pursued by processing the GNSS signals through dedicated ground-...
Conference Paper
Long-term stability and accurate time synchronization are at the core of timing network facilities in several critical infrastructures, such as in telecommunication networks. In these applications, timing signals disciplined by GNSS receivers, i.e., PPS, complement Primary Reference Time Clocks (PRTCs) by compensating for long-term drifts of their...
Article
Full-text available
In the last decades, the increasing complexity of the fusion of proprioceptive and exteroceptive sensors with Global Navigation Satellite System (GNSS) has motivated the exploration of Artificial Intelligence related strategies for the implementation of the navigation filters. In order to meet the strict requirements of accuracy and precision for I...
Article
An increasing number of innovative technologies are fostering Intelligent Transportation Systems (ITS), thus setting the milestones of future paradigms in vehicular mobility. Among these technologies, Positioning Navigation and Timing (PNT) systems and low-latency communication networks play a fundamental role. This synergy can enable cooperative a...
Preprint
Tight integration of Global Navigation Satellite System (GNSS) and Ultra-Wide Band (UWB) is growing popularity as a positioning strategy relying on mass-market devices for applications dealing with localisation and tracking of agents in challenging environments. However, due to independent clocks of Commercial off-the-shelf (COTS) devices, the offs...
Preprint
Tight integration of Global Navigation Satellite System (GNSS) and Ultra-Wide Band (UWB) is growing popularity as a positioning strategy relying on mass-market devices for applications dealing with localisation and tracking of agents in challenging environments. However, due to independent clocks of Commercial off-the-shelf (COTS) devices, the offs...
Article
Full-text available
Global Navigation Satellite System (GNSS) constitutes the foremost provider for geo-localization in a growing number of consumer-grade applications and services supporting urban mobility. Therefore, low-cost and ultra-low-cost, embedded GNSS receivers have become ubiquitous in mobile devices such as smartphones and consumer electronics to a large e...
Conference Paper
The momentum taken by the space sector in the exploration of our Moon pushes private and governmental actors to intensify their efforts for launching missions to our natural satellite. In this context, novel infrastructures and techniques are being studied and experimented to reach an increased autonomy of the positioning and navigation services in...
Poster
Full-text available
The Lunar GNSS Receiver Experiment (LuGRE) is a bilateral project involving Agenzia Spaziale Italiana (ASI) and National Aviation and Space Administration (NASA). It foresees the launch of a GNSS receiver developed by the Italian company Qascom as a payload of a FireFly’s BlueGhost spacecraft directed to the Moon in 2023.
Conference Paper
The evolution and integration of communication networks and positioning technologies are evolving at a fast pace in the framework of vehicular systems. The mutual dependency of such two capabilities can enable several new cooperative paradigms, whose adoption is however slowed down by the lack of suitable open protocols, especially in the positioni...
Article
Full-text available
Tight integration algorithms fusing Global Navigation Satellite System (GNSS) and Inertial Navigation System (INS) have become popular in many high-accuracy positioning and navigation applications. Despite their reliability, common integration architectures can still run into accuracy drops under challenging navigation settings. The growing computa...
Conference Paper
Several navigation filters have been developed since the early steps of Global Navigation Satellite Systems (GNSS) to provide high-accuracy Positioning, Navigation and Timing (PNT), and many solutions are available in the literature to support a plethora of applications. In the context of vehicular navigation and positioning, advanced state estimat...
Conference Paper
Satellite-derived timing information plays a determinant role in the provisioning of an absolute time reference to telecommunications networks, as well as in a growing set of other critical infrastructures. In light of the stringent requirements in terms of time, frequency, and phase synchronization foreseen in upcoming access network architectures...
Preprint
In recent years positioning and navigation capabilities in mobile devices have become essential to the ever-growing number of position-related smart applications. Global Navigation Satellite System (GNSS) constitutes the provider for geo-localization, therefore consumer-grade, embedded GNSS receivers have become ubiquitous in mobile smart devices....
Preprint
div>In recent years positioning and navigation capabilities in mobile devices have become essential to the evergrowing number of position-related smart applications. Global Navigation Satellite System (GNSS) constitutes the provider for geo-localization, therefore consumer-grade, embedded GNSS receivers have become ubiquitous in mobile smart device...
Preprint
Full-text available
This letter presents a methodology to reduce the computational burden of Particle Filters (PF) used to achieve a target state estimation accuracy in Bayesian tracking problems. A strategy, named Multiple Weighting (MW), that exploits information diversity of the input measurements for an efficient weighting of the particles is introduced. This stud...
Conference Paper
Bayesian navigation filters are broadly exploited in precise state estimation for kinematic applications such as vehicular positioning and navigation. Among these, Particle Filter (PF) has been shown as a valuable solution to support hybrid positioning algorithms such as sensor fusion to Global Navigation Satellite System (GNSS) and Cooperative Pos...
Article
Full-text available
In the last few years, all countries worldwide have fought the spread of SARS-CoV-2 (COVID-19) by exploiting Information and Communication Technologies (ICT) to perform contact tracing. In parallel, the pandemic has highlighted the relevance of mobility and social distancing among citizens. The monitoring of such aspects appeared prominent for reac...
Poster
Bayesian estimation such as Sequential Monte Carlo methods (SMC) are broadly exploited in signal processing domain, and their effectiveness has been assessed in several fields. Among these, state estimation in radio-positioning and navigation has fueled an intense research effort in robotics and vehicular applications. In particular, Particle Filte...
Article
Full-text available
The advances in low-latency communications networks and the ever-growing amount of devices offering localization and navigation capabilities opened a number of opportunities to develop innovative network-based collaborative solutions to satisfy the increasing demand for positioning accuracy and precision. Recent research works indeed, have fostered...
Article
Full-text available
In urban contexts, the increasing density of electronic devices equipped with Global Navigation Satellite System (GNSS) receivers and complementary positioning technologies is attracting research and development efforts devoted to an improvement of the quality of life towards the smart city paradigm. Vehicular and pedestrian positioning and navigat...
Conference Paper
In this paper, we investigate the effects of spoofing attacks on the mass-market positioning and navigation units integrated in modern day Android™ smartphones. In order to operate spoofing in a real environment, we designed and implemented a portable, configurable, low-cost GPS spoofer exploiting a software-defined radio (SDR) implementation and a...
Thesis
The Global Navigation Satellite System (GNSS) has been mostly considered as an ubiquitous and reliable positioning and navigation technology characterized nowadays by considerable precision and accuracy but weakened by critical limitations due to the intrinsic nature of radio navigation systems. Indeed, GNSS positioning in harsh environment has bee...
Article
Full-text available
Previous research contributions have addressed the definition of a Cramer Rao Lower Bound (CRLB) to investigate the performance of hybrid positioning algorithms that exploit satellite-based range measurements and independent terrestrial range measurements. Starting from such results, this work investigates the quantity of information carried by ter...
Conference Paper
The combination of ubiquitous network infrastructure and the high density of powerful, interconnected mobile devices in urban areas is driving the rise of smart cities. In parallel, the availability of ultra-low cost embedded Global Navigation Satellite System (GNSS) has enabled several affordable Location Based Services (LBS). New chipsets support...
Conference Paper
In the last decades, several positioning and navigation algorithms have been developed to enhance vehicular localization capabilities. Thanks to ad-hoc communication networks, the exchange of navigation data and positioning solutions has been exploited to the purpose. This trend has recently suggested the extension of state-of-the art navigation al...
Conference Paper
Previous research contributions addressed the definition of a Cramer Rao Lower Bound (CRLB) as a theoretical tool to investigate the performance of unbiased position estimators for deterministic non linear systems. Moving from such theoretical findings, this work aim at investigating the CRLB of hybrid estimators integrating auxiliary measurements...
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...
Conference Paper
Full-text available
Cooperative positioning is considered a key strategy for the improvement of localization and navigation performance in harsh contexts such as urban areas. Modern communication paradigms can support the exchange of inter-vehicle ranges measured from on-board sensors or obtained through Global Satellite Navigation System (GNSS) measurements. The pape...
Article
Full-text available
Raw Global Navigation Satellite System (GNSS) measurements have been available since 2016 in select Android smartphones. The availability of such observations allows smartphones users, in principle, to significantly improve the quality of GNSS-based positioning by applying customized and advanced positioning algorithms. However, the quality of such...
Conference Paper
Full-text available
Global Navigation Satellite System (GNSS) and Inertial Navigation System (INS) are nowadays widely integrated among mass-market devices, thus merging the benefits of satellite-based absolute positioning and continuity, low-noise and high-rate measurements from a variety of proprioceptive sensors. Other technologies such as Ultra-wideband (UWB), Lid...
Article
Full-text available
In early September 2017, several space weather events triggered disturbed conditions of the near‐Earth space. The combination of two coronal mass ejection arrivals, associated with an X‐class flare, caused a strong geomagnetic storm on 7 and 8 September, thus inducing diffuse ionospheric phase scintillations on Global Navigation Satellite System (G...
Conference Paper
In the field of Global Satellite Navigation System (GNSS), modern mass-market receivers are able to provide raw measurements, thus representing a valuable resource for the design of new navigation algorithms. Among these devices, a considerable amount of smartphones allows to gather such measurements before they are processed to compute the positio...
Conference Paper
Harsh environment is the main impediment to GNSS service availability due to the obstruction of line-of-sight between the satellites and the receiver. A well-known countermeasure to this issue is the exploitation of additional measurements integrated with the GNSS solution, addressed to assure the continuity of service or to improve the positioning...
Conference Paper
The limited availability and the lack of continuity in the service of Global Positioning Satellite Systems (GNSS) in harsh environments is a critical issue for Intelligent Transport Systems (ITS) applications relying on the position. This work is developed within the framework of vehicle-to-everything (V2X) communication, with the aim to guarantee...
Research
Full-text available
This work concerns the study of a satellite navigation system providing a solution to the positioning problem with the support of a fixed Base Transceiver Station (BTS), which will work as an aiding peer. The main idea is to use less signals coming from satellites than the minimum required since user’s coverage may not be full. The amount of inform...
Research
Full-text available
The purpose of the project is the simulation and the performance evaluation of different models of transmission systems for radio relay link, focusing on the optimization of the main design parameters. The analysis is taken at physical layer by using a modular approach in order to inspect the properties and the mathematical model of each component....

Questions

Questions (3)
Question
Ettus Research Universal Software Radio Peripherals (USRP) are broadly employed in radiofrequency signal acquisition activities. However, the amount of generated data often requires auxiliary storage facilities.
Let me take as an example a specific setup.
A USRP N210 is headed by a PC with limited storage capabilities. The USRP is configured (via GNU Radio RTL-SDR) to transfer all the data to a Network-attached Storage (NAS). All the devices (USRP, PC, NAS) are within the same LAN. The setup works well, but the PC sounds quite redundant in the configuration (except for hosting GNU Radio, thus sending commands to the USRP).
Given that the USRP is configured to stream data to the NAS (NAS IP address is the destination)
  • Is the stream flowing through the PC before reaching the destination?
  • Is it possible to skip the host PC (bottleneck) and let the USRP working in a sort of standalone mode?
Question
Besides positioning solutions, Global Navigation Satellite Systems (GNSS) receivers can provide a reference clock signal known as Pulse-per-Second (PPS or 1-PPS). A TTL electrical signal that is used in several applications for synchronization purposes.
  1. Is the PPS physically generated through a digitally-controlled oscillator (or line driver) whose offset is periodically re-initialized by the estimated clock bias (retrieved by means of PVT algorithms)?
  2. Are there any specific filters/estimators devoted to a fine PPS generation and control?
  3. Does some colleague know any reference providing technical details on this aspect?
Question
Does anyone working in the field of GNSS multi-agent/multi-receiver positioning know public data repositories including high-rate positioning data (> 10 Hz PVT solutions)?
Urban or mild-urban track logs obtained through high-accuracy GNSS/INS/RTK receivers are valuable options (sub-meter accuracy).

Network

Cited By

Projects

Projects (3)
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
Project
The Global Navigation Satellite Systems (GNSS) are deemed to be a key element in the design of new services in smart cities, or smart and sustainable cities, as has been indicated by the GNSS European Agency and the United Nations Office for Outer Space Affairs (UNOOSA). Some of its applications will include autonomous vehicles and machinery, control of the access to city centres, traffic management and the provision of environmental and positioning intelligence. Within this context, the European Space Agency (ESA) has selected the HANSEL project – Navigation and GNSS in Smart Cities, with the involvement of the UAB, to develop a testing ground for the future navigation and positioning services needed in smart cities. The Bellaterra campus will serve as the testing ground and become an important contribution to the Smart Campus Living Lab concept, which the university is implementing on campus to make it a smart and sustainable environment. HANSEL came into being as a result of a competitive call at European level which attracted the main companies and research centres belonging to the field of GNSS positioning systems. The project includes the involvement of not only the UAB, but also of the Catalan firms Rokubun,which is leading the project, and TrafficNow, as well as the Politecnico di Torino university and the Italian LINKS Foundation.
Project
Today, many of the location-based services (LBS) related to urban mobility rely on smartphones. The availability of raw GNSS measurements on Android phones has opened up the possibility of exchanging such measurements for improved accuracy, precision, robustness, and availability. Collaborative ranging and cooperative positioning (CP), if implemented with the smartphones’ ultra-low-cost GNSS chipsets, can enable a plethora of applications that support a modern smart city framework. Cooperative Android Positioning System for Localisation (CAPS-Loc) proposes developing an optimal framework on Android smartphones for the exchange and nearreal-time exploitation of raw GNSS measurements, as well as improved LBS. It is slated to provide three key functionalities: A network structure for the real-time exchange of measurements, one white box for the combination of measurements by means of time synchronisation, and a second white box for the integration of collaborative data into the main navigation algorithm. Aside from being a server-based system, CAPS-Loc is expected to use a phone-to-phone mode based on Wi-Fi direct to ensure continuity of its service when no network is available.