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...

Image: Shutterstock What's new: Report on a tactic to jam Starlink over broad areas. Why it's important:  Starlink was used to overcome Russian jamming in the early phases of the war in Ukraine and can be used for PNT when GNSS is not available. Low Earth Orbit...

Image: Russian "research vessel" travelarium.ph / Shutterstock.com What's new: A Royal Navy report of Russian vessels sailing close to the U.K.'s shores. A "research vessel" was jamming GPS signals and pointing lasers at patrol aircraft. Why it's important: Other...

Image: GPSJam.org What's new: The US Federal Aviation Administration (FAA) issued an advisory yesterday about "WORSENING SECURITY SITUATION AND HEIGHTENED MILITARY ACTIVITY IN OR AROUND VENEZUELA..." Not mentioned in the advisory, but cited by many media outlets, is...

Image: Shutterstock What's new: The UK Science Minister announced £155M funding for PNT initiatives today at the Royal Institute of Navigation's annual  PNT Leadership Seminar today. Why it's important: PNT is a crucial utility for nearly every infrastructure. GNSS is...

Image: Shutterstock What's new: An article, focusing on maritime, about using data fusion to help overcome spoofing. Why its important: "The prudent navigator will use all means available to determine their position" - long standing maritime adage incorporated into...

Image: Iridium What’s new After 3 years of work (and we are sure much expense) Iridium has developed a chip capable of receiving its timing signal. Why it’s important: Iridium PNT is an independent source of time. NIST confirmed Iridium PNT as an accurate and reliable...

Image: GPS III USAF What's new: A reasonably thorough overview of GNSS, uses, etc. targeted to investors. Why its important: This is what the investment community, those who decide a lot of what commercial endeavors get funded or not, are being told about GNSS/GPS....

Image: Shutterstock What's new: A piece by Avi Rosenthal from the Z-Wave Alliance discussing the need to both backup GPS and not displace well-established users from their spectrum. Why it's important: NextNav has a petition pending before the FCC asking for about $5B...

Image: Copilot AI What's new: A South Korean government press release about a two day meeting with the U.K. and France. Among the discussion items were: Strategic plans to standardize eLoran, and Establishing an international consultative body for eLoran cooperation....

image: Shutterstock What's new: An update on China's commercial LEO PNT efforts from a good friend of the RNT Foundation. References: CENTISPACE: https://www.unoosa.org/documents/pdf/icg/2023/ICG_WG-S_LEO-PNT_Workshop_June_2023/ICG_LEO-PNT_Workshop_2023_01.pdf...

Image: Shutterstock What's new: The EU has released a tender for a study on the feasibility of using LEO communications satellites for "complementary" PNT.  Why its important: It is another way the EU is still working to consider a multiplicity of PNT sources. ESA and...

Image: GPS Spoofing near Delhi on 5 Nov 2025 displayed on GPS Wise (https://gpswise.aero/) What's new: Significant GPS spoofing and air traffic disruption in and around India's capital.  Why it's important: Indira Gandhi International Airport in Delhi is India's...

Image: RNT Foundation What's new: An article about the U.S. Department of Transportation's (DOT) actions on complementary PNT (CPNT). Why it's important: DOT is continuing to act as best they can and are allowed by the Office of Management and Budget The most they are...

Image: Shutterstock What's new: A paper by the National Security Space Association. Why it's important: Reliable systems need reliable (and resilient) infrastructure, including PNT. A resilient PNT architecture properly implemented for Golden Dome, including the...

Image: NDIA What's new: A podcast by the National Defense Industrial Association's (NDIA) Emerging Technologies Institute. Why it's important: NDIA has 1,700 corporate and 66,500 individual members, all of whom are concerned about national security.  What else to...

Image: National PNT Architecture graphic published by US DOT and DOD in 2008 What's new: The US Department of Transportation awarded five contracts totaling approx $5M for further development/demonstration of complementary PNT technologies. Why it's important:  These...

Image: Shutterstock What's new: Jamming and spoofing are so common in commercial aviation they have been incorporated into video games. Why it's important:  Lots of future pilots start out on video game simulators like this one. There is no end in sight for jamming...

Image: GPSPATRON What's new: Lots of activity in Poland assessing the chronic GNSS interference from Russia and looking at countermeasures. The partnership between GPSPATRON and Gdynia Maritime University is a good example. Why it's important: The interference is...