A5074401924- GNSS positioning and interference
- Indoor and Outdoor Localization Technologies
- Inertial Sensor and Navigation
- Ionosphere and magnetosphere dynamics
- Satellite Communication Systems
- Wireless Communication Networks Research
- Target Tracking and Data Fusion in Sensor Networks
- Advanced Frequency and Time Standards
- Geophysics and Gravity Measurements
- Spacecraft Design and Technology
- Radio Wave Propagation Studies
- Advanced Wireless Communication Techniques
- Soil Moisture and Remote Sensing
- UAV Applications and Optimization
- Earthquake Detection and Analysis
- Radio Astronomy Observations and Technology
- PAPR reduction in OFDM
- Bluetooth and Wireless Communication Technologies
- Image and Signal Denoising Methods
- Planetary Science and Exploration
- Mobile Agent-Based Network Management
- Underwater Vehicles and Communication Systems
- Space Satellite Systems and Control
- Power Line Communications and Noise
- Robotics and Sensor-Based Localization
Polytechnic University of Turin
2016-2025
Istituto Nazionale di Geofisica e Vulcanologia
2015-2023
Agenzia Spaziale Italiana
2023
Pratt Institute
2020
University of Naples Federico II
2020
University of Stuttgart
2019
Wuhan University
2019
LINKS Foundation
2019
Istituto Superiore Mario Boella
2008-2013
Space (Italy)
2010
Advances in the development of micro-electromechanical systems (MEMS) have made possible fabrication cheap and small dimension accelerometers gyroscopes, which are being used many applications where global positioning system (GPS) inertial navigation (INS) integration is carried out, i.e., identifying track defects, terrestrial pedestrian navigation, unmanned aerial vehicles (UAVs), stabilization platforms, etc. Although these MEMS sensors low-cost, they present different errors, degrade...
Jamming is the act of intentionally directing powerful electromagnetic waves toward a victim receiver with ultimate goal denying its operations. This paper describes main types Global Navigation Satellite System (GNSS) jammers and reviews their impact on GNSS receivers. A survey state-of-the-art methods for jamming detection also provided. Different approaches are investigated respect to stage where they can be implemented.
Scintillation caused by the electron density irregularities in ionospheric plasma leads to rapid fluctuations amplitude and phase of Global Navigation Satellite Systems (GNSS) signals. Ionospheric scintillation severely degrades performance GNSS receiver signal acquisition, tracking, positioning. By utilizing signals, detecting monitoring effects decrease effect disturbing signals have gained importance, machine learning-based algorithms been started be applied for detection. In this paper,...
This paper proposes a methodology for automatic, accurate, and early detection of amplitude ionospheric scintillation events, based on machine learning algorithms, applied big sets 50 Hz postcorrelation data provided by global navigation satellite system receiver. Experimental results real show that this approach can considerably improve traditional methods, reaching accuracy 98%, very close to human-driven manual classification. Moreover, the responsiveness is enhanced, enabling alerts.
<h3>Abstract</h3> Taking the work conducted by global navigation satellite system (GNSS) software-defined radio (SDR) working group during last decade as a seed, this contribution summarizes, for first time, history of GNSS SDR development. This report highlights selected implementations and achievements that are available to public or influenced general development SDR. Aspects related standardization process intermediate-frequency sample data metadata discussed, an update Institute...
In this study, the concept of multichannel signal tracking, previously discussed in Global Navigation Satellite System literature, is expanded towards next-generation satellite navigation paradigms by leveraging multiple narrowband signals that are synchronously transmitted from same satellite. This approach achieves a performance comparable to over larger bandwidths while effectively reallocating frequency resources enhance capacity wideband communication channel. methodology can be applied...
Coupled amplitude delay lock loops (CADLL) is a recently proposed multipath estimation and mitigation technique based on joint of line-of-sight (LOS) signal amplitude, code phase, carrier phase. The CADLL performance evaluated against two widely known methods: the high-resolution correlator (HRC), representative correlators combination methods, (MMT), methods. Multiple tests emulating various scenarios are performed to demonstrate that always generates better results than other Additionally,...
Abstract In early September 2017, several space weather events triggered disturbed conditions of the near‐Earth space. The combination 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 Global Navigation Satellite System (GNSS) signals. This work analyzes effects actual impact such transionospheric Positioning (GPS) signals related positioning accuracy. research...
Abstract We investigate the geospace response to 2015 St. Patrick's Day storm leveraging on instruments spread over Southeast Asia (SEA), covering a wide longitudinal sector of low‐latitude ionosphere. A regional characterization is provided, identifying peculiarities ionospheric irregularity formation. The novelties this work are in broad range and methodology relying integration data acquired by Global Navigation Satellite System (GNSS) receivers, magnetometers, ionosondes, Swarm...
The disruptive effect of radio frequency interference (RFI) on global navigation satellite system (GNSS) signals is well known, and in the last four decades, many have been investigated as countermeasures. Recently, low-Earth orbit (LEO) satellites looked at a good opportunity for GNSS RFI monitoring, five years seen proliferation commercial academic initiatives. In this context, paper proposes new spaceborne to detect, classify, localize terrestrial signals, particularly jamming spoofing,...
There has been a great interest in the development of high-altitude platforms, which are low cost stratospheric aircraft carrying payloads tailored for wide range applications telecommunications and remote sensing. These platforms capable flying at altitudes ranging between 17 30 km, with potential endurance weeks to months, features that make them attractive provision future personal communication services. This paper deals theoretical derivation channel model link platform terrestrial...
Raw Global Navigation Satellite System (GNSS) measurements have been available since 2016 in select Android smartphones. The availability of such observations allows smartphones users, principle, to significantly improve the quality GNSS-based positioning by applying customized and advanced algorithms. However, is poor, mainly because low smartphone hardware components nonideal environment which phones are typically used. To overcome this problem separate contribution signal quality,...
<h3>Abstract</h3> Ionospheric scintillation is the physical phenomena affecting radio waves coming from space through ionosphere. Such disturbance caused by ionospheric electron-density irregularities and a major threat in Global Navigation Satellite Systems (GNSS). From signal-processing perspective, one of most challenging propagation scenarios, particularly high-precision GNSS receivers safety critical applications where accuracy, availability, continuity, integrity are mandatory. Under...
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 ultra-low-cost, embedded GNSS receivers have become ubiquitous mobile devices such as smartphones consumer electronics to large extent. However, limited sky visibility multipath scattering induced areas hinder positioning navigation capabilities, thus threatening quality position...
The Lunar GNSS Receiver Experiment (LuGRE) is a joint NASA-Italian Space Agency (ASI) payload on the Firefly Blue Ghost Mission 1 (BGM1) with goal to demonstrate GNSS-based positioning, navigation, and timing at Moon. LuGRE was chosen by NASA Commercial Payload Services (CLPS) program as one of ten payloads its "19D" task order for delivery lunar surface in 2023. consists weak-signal receiver, high-gain L-band patch antenna, low-noise amplifier, an RF filter. receiver will track GPS L1 C/A...
The paper investigates approaches for loosely coupled GPS/INS integration. Error performance is calculated using a reference trajectory. A improvement can be obtained by exploiting additional map information (for example, road boundary). constrained solution has been developed and its compared with an unconstrained one. case of GPS outages also investigated showing how Kalman filter that operates on the last received position velocity measurements provides benefit. Results are means...
The definition of new families curves named interference error envelope (IEE) and running average (IRA) is presented. Such tools are able to assess the impact RF on different GNSS receivers, taking into account features in-band source. In fact actual final performance strictly related specific receiver architectures. Continuous wave (CW) wide band (WB) signals considered in order by means IEE IRA robustness modulations based multiplexed binary offset carrier (MBOC) scheme for several...
Radio frequency interference detection and mitigation are becoming of paramount importance due to the increasing number services applications based on position obtained by means Global Navigation Satellite Systems. A way cope with such threats is implementation in receiver advanced signal processing algorithm able raise proper warning or improve performance. In this paper, we propose a method Wavelet Transform split useful from interfering component transformed domain. The wavelet packet...
A global Internet of Things is possible by embracing constellations satellites acting as orbiting gateways in a Direct-to-Satellite IoT (DtS-IoT). By removing the dependency on ground gateways, DtS-IoT enables direct service regions illuminated passing-by satellite. After an in-depth overview relevant experiments and candidate technologies, we discover that specific configurations Long-Range (LoRa) network protocol specification are particularly appealing to realize vision. Specifically,...
Global Navigation Satellite Systems (GNSSs) are the most widespread technology for Position and Timing (PNT). They have been traditionally deployed exploiting Medium Earth Orbit (MEO) or Geosynchronous (GSO) satellites. To meet future demands overcome MEO GSO limitations, GNSSs based on Low (LEO) constellations investigated as a radical system change. Although characterized by higher Doppler effect, PNT service supplied LEO satellites can provide received signals that about 30 dB stronger....
With the fast growing diffusion of real-time high-accuracy applications based on global navigation satellite system (GNSS), robustness GNSS receiver performance has become a compelling requirement. Disruptive effects can be induced to signal processing stages receivers due disturbances from radio frequency interference (RFI), even leading complete outage positioning and timing service. A typical RFI threat signals is represented by portable jammers, which transmit swept-frequency (chirp) in...
Global Navigation Satellite Systems (GNSSs) have been established as one of the most significant infrastructures in today's world and play an important role many critical applications. It is known that power GNSS signals at receivers' antenna extremely weak transmitted are vulnerable to interference, which can cause degraded positioning timing accuracy or even a complete lack position availability. Thus, it essential for applications detect interference further recognize types mitigation...