Image: Shutterstock What's new: A reminder of how the U.S. has fallen behind China with GPS compared to Bei Dou. Bei Dou satellites are newer and have more capability Bei Dou has 56 satellites vs 31 for GPS Bei Dou has 120 ground stations vs 11 for GPS Why its...

Image: Shutterstock What's new: Data and anecdotes we have not seen often, in some cases ever, about interference in aviation: EASA said that of about 6,000 spoofing incidents in 2025, 25% were during approach. - That counts! On spoofing: “Actual occurrences are...

Image: Instagram - LTGEN Susan Coyle, Australia Defence Forces What's new: The leader for Joint Capabilities for Australia's Defence Force (J8 in the U.S.) discussing navigation warfare at Australia Institute of Navigation's PNT2026 in Sydney. Why it's important: The...

Image: Shutterstock What's new: This item we overlooked last month about PNT security at Davos. Why it's important: Physical security, cybersecurity, and finally PNT security is becoming "a thing." Next step could be resilient systems! What else to know: This is a...

Image: Shutterstock What's new: An interesting LinkedIn post from Dr. Avraham (Avi) Cohen in Israel about how GNSS interference is accelerating the move to autonomous weapons systems. Why it's important: Removing the human in the loop for what targets to hit and who...

Image: Shutterstock What's new: China's announcement of a new anti-satellite weapon. Why it's important: More evidence that satellites are important and space is not safe. If China is talking about this capability to destroy satellites in LEO, what capability do they...

Image: Shutterstock What's new: The Coast Guard has announced more information about CGSIC in April, and provided a link if you want to attend in person. RNT Foundation has scheduled its annual meeting and reception for the evening of the 20th of April at NAB...

What's new: A podcast from the Texas Transportation Institute (TTI) featuring the RNTF President. Why it's important: Transportation professionals, like a lot of us, tend to take GPS for granted. They base their plans, and their day-to-day operations, on the...

Image: Gen. David Thompson, USSF, inducting Gladys Mae West into the Space Force Hall of Fame. US DoD photo What's new: The passing of an important contributor to GPS and all the benefits we receive from space-based PNT. Why it's important: It is important to...

Image: USAF What's new: An appropriations report accompanying the DOD funding bill that outlines how GPS and PNT money is to be spent. Why it is important: Where Congress puts various amounts of money, and what they say about it, indicates what they are thinking, and...

Image: NATO Minesweepers in the Baltic, US Navy photo by MC2 Amanda s. Kitchner What's new: Spurred on by years of GNSS interference Baltic and North Sea coastal nations, plus Iceland, vow to crack down on a variety of violations of international maritime law. Why...

Image: Singapore Maritime Safety Agency, ship from night collision during GNSS spoofing What's new: The Royal Institute of Navigation (RIN) published a report "Impacts of GNSS Interference on Maritime Safety."  Why it's important: GNSS interference has already caused...

Image: Shutterstock What's new: As a non-profit, NAB seems like it might be interested in helping/coordinating/leading a resilient national PNT architecture for the U.S. Why it's important: Leadership has been a shortfall in the national PNT equation for some time....

Image: European Space Agency What's new: Increasing concerns about the lack of Space Situational Awareness, and the potential for catastrophe with all the satellites being placed in low earth orbit where there are already tens (if not hundreds) of thousands of pieces...

Image: GPS Wise What's new: Rarely seen spoofing activity in the interior of China on the 20th of January. Why it's important: We aren't really sure, except that it is unusual. If it was near a conflict zone, or along the coast where there are likely to be embargoed...

Image: Shutterstock What's new: Per the headline, U.S. Space Force has cancelled the Resilient GPS (R-GPS) program. The project was to have put small satellites in LEO transmitting on GPS frequencies that would have been received as stronger and more accurate signals....

Image: Copilot AI What's new: A system for landing drones on ships without GNSS Why it's important: Shipboard landings can be many times more difficult than landings ashore. The landing area is almost always moving in all three dimensions and weather can be more...

Image: Shutterstock What's new: An article about UAS governance by RNTF President Dana A. Goward. Why it's important: UAS and Counter-UAS are great use cases for why the U.S. needs a multi-layered resilient national core PNT architecture. It is important for...

Image: Shutterstock What's new: Prosecutors have charged a man found with a jammer at the Warsaw airport with endangering aviation safety. Why it's important: Using a jammer at the airport could interfere with operations, delay flights, perhaps even cause accidents on...

Image: Copilot AI What's new: Information that Iran used GPS spoofing to interfere with Starlink's service in that country. Why it's important: It is another great example of how systems you might not expect depend upon GPS and the vulnerabilities that introduces....

Image: Shutterstock What's new: Articles and papers exploring the PNT capability of communications systems. One of the most recent and accessible is "Communications-PNT integration: A new architectural layer for resilient and ubiquitous navigation" in GPS World. Why...

Image: Shutterstock What's new: Iran has used military grade jamming to prevent use of Starlink in the country. Why it's important: Starlink is a LEO comms system that can also be used by some for PNT when GNSS is not available. From a PNT community point of view, it...

Image: Shutterstock What's new: Two government agencies in Norway are proposing establishment of a national time service that does not depend on satellites and are asking for input. Observers tell us this project will go forward and this request is to help refine how...

Image: Shutterstock What's new: An article providing and excellent overview and summary of where we are today with LEO PNT, and where things look like they are going. Why its important: PNT from LEO can have lots of attributes that decrease users' vulnerabilities...

Image: Shutterstock What's new: An opinion piece by Sean Gorman about the need for a resilient PNT architecture that includes terrestrial systems. Why it's important: These kinds of articles keep the issue fresh in people's minds. When they come from different...

Image: UK Civil Aviation Authority What's new: An article in Inside Unmanned Systems about Golden Dome and that system's need for resilient PNT which could also support UAS and Counter-UAS operations. Why it's important: The government seems concerned about UAS and...

Image: Shutterstock What's new: A letter from RNT Foundation members Gen. William Shelton, and CAPT Dana A. Goward to the Washington Post commenting on an article they published at the beginning of the year. Why it's important: From our perspective, the issue is not...

Image: Marc Berkowitz at Senate confirmation hearing (screenshot) What's new: The Hon. Mark J. Berkowitz is the new Assistant Secretary of Defense for Space Policy. Why it's important:  Mr. Berkowitz is well versed on GPS vulnerability and other PNT issues. In 2024 he...

Image: Shutterstock What's new: A summary/ overview article of GPS' importance and vulnerability in the Washington Post. Why its important: The primary challenge to PNT resilience in the U.S. is lack of leadership focus and effort. While "the Post" is not the most...

Image: Shutterstock What's new: A "European perspective" from my colleague Peter Gutierrez at Inside GNSS. Why it's important: Peter makes a number of important points: "The AIS spoofing incident is not an isolated incident but part of a broader signal-integrity...

Image: Shutterstock What's new: An article about challenges operating in the Arctic which include degradation or denial of GNSS. Contributors to degradation can include low elevation of satellites, terrain, and Earth's electromagnetic field. Why it's important: The...

Image: Copitlot AI What's new: A posting by RNT Foundation member organization Frontier SI discussing resilient PNT generally and examining the need and case for Australia. Why it's important: Australia is an excellent example of a developed country still coming to...

Image: Atomic clock at UK's National Physical Lab What's new: The U.S. National Institute of Standards and Technology (NIST) lost 4.8 microseconds last weekend when emergency generators failed to start during a commercial electrical grid outage. Why it's important:...

Image: Shutterstock What's new: A fairly comprehensive report from the New York Times about jamming and spoofing in and around Venezuela. Why it's important: The article reinforces the idea that "everyone jams." PNT is a tool of tactical and strategic great power...

Image: Resilient PNT Architecture - RNT Foundation What's new: Editor's intro to the Nov-Dec 2025 edition of Inside GNSS+. Why it's important: This intro provides a high level summary of the comprehensive report on September's PNT Leadership Summit further on in the...

Image: Federal Communications Commission What's new: RNT Foundation President Dana A. Goward met with FCC Commissioner Trusty and staff recently to discuss global and national PNT policy.  Why it's important: The FCC has three dockets, that we know of, that deal...

Image: USAF Tanker DoD.mil What's new: A near-miss between a Jet Blue airliner leaving Curacao and a USAF tanker. The tanker was not broadcasting its location through ADS-B nor, apparently, notifying air traffic control it was in the area. Why it's important: People...

Image: M/T Skipper, Screenshot Marinetraffic.com What's new: The oil tanker seized by the U.S. that was carrying sanctioned Venezuelan oil had been transmitting incorrect location information, undoubtedly to conceal its activities, for some time. The seizure operation...

Image: RNT Foundation What's new: Congressman Fulcher (R, ID) wrote to FCC Chair Carr saying: "As you know, China and Russia have developed and are deploying back up, terrestrial systems. Once again, we are lagging." "The FCC has heard from various companies that they...

Image: Spirent What's new: An American Airlines and an Air Canada aircraft were spoofed off  the coast of the Carolinas yesterday. This was apparently due to previously announced military testing. Why it's important:  Testing is essential and the military makes every...

Image: NASA Earth Observation Lab What's new: This article is a longer discussion of the NSSA paper we posted about last month. Why it's important: For Golden Dome to succeed, indeed for any real Counter-UAS or UAS system to succeed, it will have to be underpinned by...

Image: GPSJam.org What's new: A more in-depth look at GPSPatron's efforts with Gdynia Maritime University examining GNSS interference from Kaliningrad. It includes comments by Krasimir Hristov, GPS Patron's head of business development. Why it's important:...

Image: Hurricane Isabel from International Space Station - NASA Johnson Space Center What's new: The Washington View column from the Nov/Dec 2025 edition of Inside GNSS+ discussing the danger of confusing threat and risk. Why it's important: The greatest threat is the...

Image: Shutterstock What's new: The proceedings (report-out) of September's PNT Leadership Summit co-sponsored by the RNT Foundation and Inside GNSS+. Why it's important: The event brought together over 100 PNT tech and policy experts from both sides of the Atlantic...

Image: Navigating the Arctic Circle with Starlink and OneWeb LEO Satellites (2025). What's new: A paper from Ohio State University and Prof Zak Kassas. Why it's important: GPS is great but, like any system it has its limitations. identifying and using complementary...

Image: Youtube What's new: Ukraine unmanned systems destroyed a factory that makes GLONASS equipment for drones and missiles. Why it's important: It is confirmation that, even in an age of electronic warfare and in a nation that has terrestrial alternatives, PNT from...

Image: Co-pilot AI What's new: Expanded information about a recent tri-nation meeting led by South Korea. Why it's important: To be really effective, navigation systems must have international standards. What else to know: We posted about this meeting last month, but...

Image: Shutterstock What's new: The GPS World Editorial Advisory Board takes on the question: Among the technical approaches being researched this year for GNSS/PNT protection, which do you consider most effective or promising? Why it's important: This is a critical...

Image: Shutterstock What's new: A report from GPSPATRON looking at GNSS interference in the Baltic originating in Kaliningrad. Why it's important: Some very interesting findings including: 1. Transition from Classical Jamming to Combined Spoofing–Jamming Interference...

Image: Bloomberg, Carla Chew, NASA What's new: A more detailed report on interference in Venezuela than we have seen before. And really great graphics. Why it's important: This report shows multiple day trends and correlates it to U.S. military activity, including...