Current Issue - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design


Pinpointing GNSS Interference from Low Earth Orbit

In the past decade, there has been a sharp increase in GNSS outages due to deliberate GNSS jamming. Receivers in LEO are uniquely situated to detect, classify and geolocate terrestrial GNSS jammers. This article explores two-step and direct geolocation of terrestrial GNSS jammers from LEO. 

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Good Performance, Less Computation

A look at NTCM-G, a new Ionospheric model fully compatible with the Galileo Open Service. 

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GEODNET Takes A Different Approach to GNSS Corrections for Drones, Other Applications

The new blockchain-based, decentralized CORS reference network provides low-cost access to triple-frequency full-constellation correction signals for centimeter accuracy, while also allowing users to earn financial rewards for contributing qualified CORS data back to GEODNET. 

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Launching Xona’s Ravens: Commercial Satnav from LEO

The startup plans to launch its first demonstration mission on SpaceX’s Transporter 5 in May, with the goal of displaying high-quality commercial PNT LEO signals from a payload suitable for small satellite deployment.

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Washington View – Deja Vu All Over Again: Ligado’s 5G Network Set For Collision Course With GPS? 

Will the network, which some are still fighting, be ready for a September rollout, and if so, what are the implications for GPS and the people who rely on it?

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Brussels View: EU Space Community Talks Security, Defense and Galileo

Speakers at the 14th European Space Conference in Brussels discussed the need to defend EU assets against unfriendly attacks. Recent events in Eastern Europe would seem to lend force to such concerns, as the European Union makes headway toward the intersection of civil infrastructure and security and defense.

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Brussels View: Bringing New A-PNT Opportunities to Life

The recent spotlighting of alternative positioning, navigation and timing technologies by weighty bodies such as the European Commission and the European Space Agency is causing more than a stir among the concerned communities, with both public and private interests now readying themselves to move beyond conventional GNSS for critical applications.

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Washington View: AAM Navigation

NASA is seeking PNT requirements for advanced air mobility when GPS is not available, but the ultimate solution may come in many forms.

At the recent FAA AAM Summit, NASA’s Parimal Kopardekar, one of the main movers in the advanced air mobility field, was asked to name some of the top operational challenges facing AAM in the near term.

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