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New Concept for Evolutive Mitigation of RFI to GNSS

Radio frequency interference, intentional or not, is considered to be among the main threats to safety-critical and commercial GNSS applications. This includes out-ofband emissions, privacy-protection devices (PPD) also known as in-car jammers, etc. Consequently, many COTS GNSS receivers nowadays integrate mitigation strategies for RF interferences (jamming and spoofing). Moreover, one can note…

Proof of concept of hybrid 5G-NR/GNSS Positioning with ad-hoc overlay

GNSS has become the corner stone of worldwide positioning applications, and in particular for those requiring high-accuracy. The outstanding performances in open sky and very competitive performances in degraded environments of GNSS are widely acknowledged, but also the need to complement GNSS by other technologies to address specific needs in challenging environments. In this context, 5G…

Cooperative Positioning and Integrity Concept in Vehicle Platooning

Vehicle platooning is a scenario in which vehicles automatically follow each other in a sequential formation known as the platoon. Autonomous Vehicle Platooning is a promising feature that could be provided by future self-driving cars, trucks and other vehicles. It involves a human driver that is either physically present or is remotely controlling the vehicle at the platoon lead. Autonomous…

Interference Monitoring from Space

A great number of civilian and military applications relies on GNSS for PNT, however its availability could be put at risk by threats such as local interference, amongst others.  GNSS spectrum monitoring is essential for: detecting, characterising and localising interference sources, which could endanger the adequate reception and processing of GNSS signals;  initiating a justified…

Application of Machine Learning Technology for GNSS IoT Data Fusion

Recent advances in technology have contributed to the deployment of a "de-facto" large GNSS receiver array based on affordable smart devices that are easy to find in the consumer market (dual band smartphones, raw GNSS data recording, new sensors).  These devices, evolving fast with each new generation, feature an increasing number of capabilities and sensors able to collect a variety of…

Antenna and Transponder Unit for Underwater PNT

Underwater wireless communications links have almost exclusively been implemented using acoustic systems. Optical links have proved impractical for many applications. Although underwater radio links were experimented in the pioneering days of radio, they did not meet the requirements of the time. Given modern operational requirements and digital communications technology, the time is now ripe for…

GNSS Science with Commercial Aircraft

Usage of commercial aircraft and vessels, as platforms for crowdsourcing science and remote sensing, is under study by organisations like the International Hydrographic Organization (IHO) in its Crowdsourced Bathymetry Working Group, or by private companies for imaging and radar applications. Some advanced passive GNSS-based processing techniques (e.g. exploiting simultaneously direct and…