Image: GPSThreatmap.com What's new: A paper from the Technical University of Denmark about how terrestrial interference with GPS interferes with the operation of other satellites. Why it's important: To properly operate, satellites need to know where they...

Image: Shutterstock AI What's new: Canada formally increasing ties with Europe, perhaps as the EU's first Associate Member. Closer cooperation and upgraded access to Galileo will be a part of this. Why it's Important: It is another confirmation that (1) Galileo is...

Image: Shutterstock AI What's new: The U.S. Department of Defense's Fortress America program seems like a great fit for a project to establish an national resilient PNT architecture. After we wrote the below item for Inside GNSS, a senior DOD official was quoted in...

Image: Shutterstock AI What's new: The National Security Space Association posted a paper by RNTF board members Hon. Greg Winfree (chair), Gen. William Shelton, and CAPT Dana A. Goward about budget claims and decisions made in the 2000's that still haunt and hurt the...

Image: Shutterstock What's new: An Op-ed by former Space Force Vice Chief of Operations Gen. Donald Thompson (USSF ret.) explaining why the U.S. must have weapons in space. Why it's important: The ideal is for space to be a peaceful, non-weaponized domain. But it is...

Image: Shutterstock What's new: The U.K. government's PNT office is asking about use of the nation's legacy time signal, MSF, broadcast on 60kHz. Respondents can access an easy tool on-line to provide input. Why it's important: National time signals can be used as...

Image: Shutterstock What's new: A report about spoofing-enabled theft in the U.S. Why it's important: It is more evidence about over-reliance on GPS signals, and the vulnerabilities that most people are ignorant of or ignore. What else to know:  It is not illegal to...

Image: Shutterstock What's new: The MSC Antonia grounded off the port of Jedda, Saudi Arabia in May 2025. A study by Georgia Tech of maritime vessels in the months before the MSC Antonia grounding revealed 31 areas of persistent GPS abnormalities around the globe,...

Image: Shutterstock What's new: Canada just released its "Positioning, Navigation and Timing Resilience Framework" to address its over-dependence on GNSS for PNT. Why it's important: PNT is essential to modern life and a nation's stability, even survival. Recognizing...

Image: Shutterstock What's new: A very complete article about the way forward for GPS in the wake of the OCX collapse. Why it's important:  GPS is the most widely adopted GNSS by far. Keeping the system strong is important, not just for the U.S. but also for billions...

Image: Meadowlands satellite jamming system - L3Harris What's new: U.S. Space Force expanding its ability to jam signals from space. Why it's important: It should remind us that signals from space are vulnerable and can be disrupted. - Yes all RF signals can be...

Image: ChatGPT What's new: A piece by our colleague Andy Proctor published by the UK's National Preparedness Commission. His major thesis is summed up well in the first few paragraphs: "PNT is still too often treated as a navigation issue. That is too narrow....

Image: Ft Jefferson, Dry Tortugas, FL credit KeyWestTravelGuide.com What's new: An opinion piece about overall resilience and the "Fortress America" initiative. Why it's important: National resilience is essential to national security. The author makes the point that...

Image: Screen capture from YouTube - Azerbaijan Air 8243 What's new: A LinkedIn post by our friend and colleague Ramsey Faragher, Director (CEO) of the Royal Institute of Navigation. He relates that many people have not fully realized GPS jamming has cost lives. And...

Image: GAO graphic - Threats to GPS What's new: The Government Accountability Office (GAO) has issued another report on Department of Defense (DOD) efforts with GPS and other PNT systems. Why it's important: The report documents only marginal progress in many areas...

Image: RNT Foundation What's new: A Further Notice of Proposed Rulemaking by the Federal Communications Commission (FCC) about reallocating spectrum near that used by GPS. For background we are also including below in this post a National Telecommunications...

Image: USCGC Eagle circa 1972, National Archives What's new: An engaging article by our friend Doug Taggart about his experiences over the decades as a navigator. Why it's important:  It is always good to remember where we have come from (and where we might have to...

Image: CoPilot AI What's new: The UK government has contracted for development of a Resilient PNT Standard. The entity doing the work is a spin off of the Royal Institute of Navigation. Why it's important: Standards are essential because words mean things. It is very...

Image: Shutterstock What's new: An opinion piece in Aviation Week about using eLoran as resilient PNT for aviation. Why it's important: Aviation seems to be the industry most impacted by jamming and spoofing at the moment, especially unmanned aviation. We have heard...

Image: Shutterstock What's new: A discussion of unmanned aircraft traffic management and the impact of low navigation integrity/spoofing. Why it's important: UTM (Unmanned Aircraft System Traffic Management) is an automated digital framework designed to manage...

Image: Shutterstock What's new: A report that the insurance industry is increasingly concerned about the lack of resilient PNT, at least in maritime. Why it's important: Maritime jamming and spoofing have caused ship collisions, fires, and groundings. Sometimes...

Image: Shutterstock What's new: Dr. Zak Kassas' most recent column, an excellent and interesting discussion of the many factors that will influence where, when, and how LEO PNT might proceed. Why it's important: LEO PNT is more resilient than GNSS and can help...

Image: European Space Agency What's new: An article about the European Space Agency's LEO PNT demonstrator, Celeste, and how it complements Galileo adding resilience. Why it's important: Celeste adds a number of upgrades and advantages  for accuracy and...

Image: Shutterstock What's new: Reports of commercial airliners' GPS jammed yesterday near Los Angeles and San Diego. The week before a panel at ION GNSS+ in Orlando, FL warned that GPS spoofing has become a "global aviation disease."  Why it's important: GPS...

Image by Copilot AI - For illustration only, not representative of a plan or proposal. What's new: A report from Norway's defense establishment research arm, FFI, that the country is highly vulnerable to loss of GNSS (we are shocked, SHOCKED!) A report from NRK that...

Image: Shutterstock What's new: A discussion of PNT needed to ensure unmanned/uncrewed systems can be safely and effectively deployed. Why it's important: The most critical factor in deployment of unmanned systems domestically is gaining and keeping public trust....

Image: Shutterstock What's new: Ships enroute the U.S. boarded by US Coast Guard and FBI because they were compromised by cyberattacks. Why it's important: Large commercial vessels are large!  Sheer bulk and often the cargo make them very dangerous if they are out of...

Image: Shutterstock What's new: Swiss officials have a program to disestablish terrestrial Instrument Landing Systems (ILS) at its airports in favor of GPS-based approaches. Pilots have objected, and they are being backed up by the European Union Aviation Safety...

Images: Shutterstock, National Guard, and NASA For years safety experts urged a malodorant be added to natural gas so leaks could be easily and quickly detected. Yet it wasn't until after 298 children and teachers, almost the whole school, were lost in a New...

Image: European Space Agency What's new: A report on the impact and potential impact of solar activity on GPS/GNSS in November 2025. The report also includes a short discussion on the possible impacts on farming if it happened at another time of year. Why it's...

Image: UK Govt. What's new: The United Kingdom has published its Space Strategy which also includes significant info on its national resilient PNT plans. Why it's important: The UK is leading the West in national resilient PNT architectures using signals from space,...

Image from YouTube: Azerbaijan Airlines Flight 8243 crashing on Christmas day 2024 with the loss of 38 lives. The aircraft had been fired on by Russian forces after GPS jamming prevented its identification as a civil aircraft. What’s new: A really outstanding podcast...

Image: Equal Earth projection showing land masses in correct proportion (Shutterstock) What’s new: A greatly improved method of making the round-earth flat for precise navigation. It is being shopped around by KeplerKoord. Why it’s important: Most navigation...

Image: European Space Agency What's new: A reminder about the dangers of space debris, congestion, and the threat of the Kessler Syndrome. Why it's important:  We depend upon space-based for many everty-day services. The U.S. has more satellites and is more dependent...

Image: NASA and Shutterstock What's new: A paper from the Royal Aeronautical Society. The topic isn't exactly new, but it has been a while since we have mentioned it as a huge threat to satellites, signals, and users. Why it's important: GNSS is essential to most...

Image: Shutterstock What's new: An ESA NAVISP study concluded that for automated and assisted driving, three of the most important PNT areas that need to be addressed are "...availability, robustness, and verification — not accuracy alone." Why it's important: ESA is...

Image: Shutterstock What's new: An item from the European Space Agency about GNSS interference monitoring that describes three "new" methods. Why it's important: Before you can properly solve or mitigate a problem you have to know it exists and sufficiently understand...

Image: Shutterstock (note: most oligarchs are uglier) What's new: Impacts from a GPS jammer in Sofia, Bulgaria included disrupted air traffic, disrupted airport ground traffic, and unspecified interference with television broadcasts. The jammer was being used by a...

Image: Shutterstock What's new: An intriguing article about authentication and confidence in navigation and timing solutions. Why its important: There are a lot of factors that go into safe, resilient use of PNT signals. If one is ignored or gotten wrong the result...

Image: GPSjam.org for 16 Aug 2026 What's new: An insightful article that discusses misconceptions about GNSS interference detection and maps. Why it's important: Not understanding these issues correctly can lead to bad political, strategic, tactical, and...

Image: EUalive What's new: A report coupling a rise in GPS disruptions and a possible Russian attack on a NATO member state. Why it's important: Intentional GPS and other GNSS disruptions by nation states are a form of electronic warfare.  Note the word "warfare." ...

Image: Lockheed Martin What's new: A thought piece from the highly respected Aerospace Corporation.  Why it's important: The article includes a number of important policy-related comments and observations. For example: "One of the most fundamental questions is: Who is...

What's new: The agenda for the PNT Leadership Summit has been finalized and the names of presenters have been added. Why its important: The summit is a unique opportunity, now that the government's PNT Advisory Board is no longer active, for individuals and...

Image: Shutterstock What's new: An excellent discussion about some of the challenges implementing LEO PNT systems. Why it's important: GNSS signals are very vulnerable and are being disrupted all the time. LEO PNT is likely to be more resilient and more precise and...

Image: Shutterstock What's new: An info graphic that shows many of the ways GNSS impacts/supports/is integrated with utilities and other systems we use everyday. Why it's important: Educating the public and leaders on this is an essential first step. Next we need...

Image: UKPNTO What's new: A compilation of different eLoran initiatives and links to some studies and initiatives. Why it's important: Complementary and backup systems for GNSS are becoming increasingly necessary. GNSS is not reliable in many parts of the world and...

Image: Xona Space What's new: Significant progress toward commercial LEO PNT. Why it's important: LEO PNT can be stronger, more accurate, and more resilient to disruption than GNSS signals. What else to know:  Inside GNSS has started a column dedicated to LEO PNT....

Image: Shutterstock What's new: More information about how the wars and potential wars in space are shaping up. Why it's important: The U.S. is far more dependent on space than any other nation. For a while space was a safe place to put critical assets. Now, not so...

Photo Credit: SpaceX / U.S. Space Force via DVIDS What's new: The Air Force has recently taken over the MGUE program from Space Force and is predicting TESTING of the cards for equipment will be complete next year. Why it's important: M-code enabled receivers will be...