Image: Shutterstock What's new: More info on the use of GPS jamming by criminals. This time targeting luxury cars in India. Why it's important: This demonstrates again the weak nature of GPS (and all GNSS) signals and how they can easily be denied. And there are much...

Image: GPSJam.org What's new: Increasing GPS disruption in the Baltic. - 85% of flights impacted. Communications infrastructure, and maritime also feeling impacts. Why its important: Reduced safety margins all around, degraded technologies, etc. We used to say...

Image: Shutterstock What's new: A good overview of some ways space is no longer a safe place to put things upon which we really depend. Why it's important: The United States is more reliant on space-based capabilities, in PNT and other areas, than any other nation....

Image: RNT Foundation Your Responses to the FCC's NOI on PNT A look at the main concerns during the comment period. Dana A. Goward America’s Global Positioning System (GPS) is simultaneously amazing, indispensable, and vulnerable. If its positioning, navigation, and...

Image: Shutterstock What's new: Another instance of a commercial aircraft having a false terrain warning, undoubtedly due to GPS interference. Why it's important: The impacted aircraft was grounded for a week after the incident. From a larger perspective this is bad...

Image: Shutterstock What's new: Some impacts on farming that we had not considered before. Why it's important: According to the article, 40% of farms could be impacted. We all gotta eat, so that's important. What else to know: We are more than halfway through 2025,...

Image: John Hartzel What's new: A study about the interaction of climate change and satellite orbits. Why its important: There are a lot of threats to GPS, including severe solar activity. Severe solar activity, while inevitable,  has always been considered, and still...

Image: NTS-3, USAF 2d Lt Jacob Lutz AFRL What's new: Space Force successfully launched and orbited a new navigation technology satellite  - NTS-3. Why its important:  The satellite will conduct a wide variety of experiments to move U.S. satnav forward.  These kinds of...

Image: Shutterstock What's new: "State of Global Aviation Safety" 2025 report from the International Civil Aviation Organization (ICAO). It includes a section about GNSS interference. From the report: "For the short term, it is not foreseen that the issue of the GNSS...

Image: Shutterstock What's new: Well... it's not entirely new. Todd Humphreys and others have been talking about terrestrial sources interfering with satellites for a while. This is the first time we have seen it in more popular/ general media, though. Why it's...

Image: Spoofed AIS tracks courtesy of Skytruth What's new: A working group examining effects, mitigations and solutions of GNSS interference in maritime. Why it's important: GNSS interference in maritime can have serious consequences. We have already seen it:...

Image: Singapore Maritime Law Enforcement Agency What's new: GNSS interference becoming a concern of insurance professionals, and hopefully the industry as a whole. Why it's important: Often things that are difficult for government regulators and safety professionals...

Image: Shutterstock The late Ashton Carter was Secretary of Defense from 2015 to 2017. In a 2014 interview while he was awaiting confirmation he was quoted as saying: "I hate GPS ...Twenty years from now everything ... will have on the chip a clock, a gyro and an...

Image: Shutterstock What's new: An opinion piece from the United Kingdom about PNT and critical infrastructure, but in an aviation media outlet. Why it's important: Everything is related and impacts everything else. For example, airplanes can fly without the...

Image: Norway's Kraka Lighthouse Shutterstock What's new: An interesting article that demonstrates the continuing need for visual navigation aids. Why it's important: Visual aids to navigation will continue to be used regardless of the amount of IT and electronic aids...

Image: RNT Foundation What's new: The Department of Transportation (DOT) is looking to hire a person to lead its PNT and Spectrum Management staff. The position was formerly held by Karen Van Dyke. Why it's important: DOT is the lead for all civil GPS and PNT issues...

Image: Shutterstock What's new: Interesting observations about GNSS, PNT and "global realignment." Why it's important: GNSS and PNT have always been tools in great power competition. It is now becoming more obvious to more people. The U.S. is ceding tech leadership to...

Image: Shutterstock What's new: Galileo's OSNMA (Open Service Navigation Message Authentication) is operational. Why it's important: Users are able to authenticate signals and prevent many spoofing attacks on their receivers. What else to know: The US National...

Image: Shutterstock What's new: A spike in GPS spoofing, jamming, and concern about maritime operations in the Red Sea. Why it's important: Interference with GPS signals has resulted in ship groundings and collisions. What else to know: The article got at least one...

Image: GPS.gov What's new: An announcement that the Civil GPS Service Interface Committee Meeting will be held in the spring next year in the Washington, DC area. Why it's important: This is usually a good forum to hear about updates to GPS and other PNT issues. What...

Image: Shutterstock What's new: Legislation introduced to require a report on GPS vulnerability and its impact on national security. Why it's important: It is almost always good when senior leaders pay attention to PNT issues. What else to know: This isn't the first...

Image: Shutterstock What's new: An article expressing concerns that the U.S. administration might deny access to GPS as a part of its efforts to influence the behavior of other nations and their officials. Why it's important:  Such concerns could drive nations and...

Image: Shutterstock AI What's new: An insightful article on the geo-political aspects of GNSS and PNT. Why it's important: This article is about Iran switching from GPS to Bei Dou. But Iran is just one example. Pakistan has officially gone from using GPS to Bei Dou....

Image: Shutterstock What's new: An interesting short video that posits composite/multi-sensor navigation is not only the wave of the future, but is just about here. Why it's important: It's good to get folks thinking seriously about this as soon as possible because:...

Image: China Space Agency What's new: An American Security Project paper on how China uses space, including BeiDou, for influence/soft power. Why it's important:  As the U.S. greatly decreases it's diplomatic/ soft power efforts around the world, it leaves a vacuum...

Image: GPSwise What's new: An opinion piece by one of the newest members of our International Advisory Council, Jason Kim, urging authentication for GPS. Why it's important;  GPS could have an internet enabled High Accuracy and Robustness Service that could provide...

Image: Space Force What's new: The new ground control segment of GPS has been accepted by Space Force. Why that's important: This system is needed to improve cybersecurity and support modernized satellite operations. Space Force also says they need it operational...

Image: Shutterstock What's new: An excellent Inside GNSS article by oneNav's Paul McBurney discussing the many advantages of the L5 civil signal. Why it's important: The signals are available now (and have been for years), but Space Force has them set "unhealthy"...

Image: Conceptual graphic of UK eLoran timing coverage - Mitch Narins, Strategic Synergies What's new: France and the UK partnering on resilient PNT including eLoran. Why it's important: France is the first EU nation to begin concrete actions to provide a terrestrial...

Image: Shutterstock What's new: A reminder of how important PNT from GPS/GNSS is to telecoms. And the more sophisticated the system, the greater the requirement for precise and reliable PNT. Why it's important: Our infrastructures tend to be inter-reliant. For...

Image: Shutterstock What's new: The European Aviation Safety Agency (EASA) and the International Air Transport Association met last month to discuss "mitigating GNSS interference risks." They developed a set of recommendations for airlines and National Aviation...

Image: Tobol GPS jammer operating in Kaliningrad. Source: Russian Space Systems What's new: More documentation about spoofing and jamming in the Baltic. We admit this isn't entirely new information. We have all known for quite some time that Russia is behind the...

Image: Shutterstock What's new: An explanation by Claude AI of one of our most pressing PNT issues in the U.S. Certainly it is something the Deputy Secretary of Transportation and the Chair of the FCC are concerned about. Why it's important: We are wary of AI, as we...

Precisely correct every five minutes.  

Image: Screen shot from social media of tanker Adalynn after collision What's new: Recent maritime accidents showing the impact of GPS/GNSS interference. Why it's important: While interference in aviation gets the most press, it impacts almost every other aspect of...

Image: RNT Foundation International Advisory Council member Jason Kim What's new: An excellent opinion piece by Jason Kim, recently retired from his position as Chief of Staff at Department of Commerce's Office of Space Commerce. Why it's important: We rarely have the...

Image: Shutterstock What's new: Stronger actions by Europe responding to GNSS interference. Why it's important: The issue is finally reaching the political level in Europe and leaders are taking some actions. What else to know: The UK eLoran system will immediately...

Image: Shutterstock Blog editor's note: We were going to profile our friend and colleague Karen in honor of her retirement from federal service. But Peter Gutierrez did a much better job in this Inside GNSS piece than we ever could. Well done, Peter, and exceptionally...

Image: File image from GPSJam.org What's new: Interesting refresher article about activity in the Baltic. A good reminder that it is still happening.  Why it is important: Interference with GPS/GNSS is happening far beyond what is needed for defense of the Russian...

Image: Lockheed Martin What's new: A recording of an all day event at George Washington University's Space Policy Institute. Why it's important:  Dept. of Transportation Deputy Secretary Bradbury was the opening speaker. That he came in person and expressed his...

Image Shutterstock What's new: An item demonstrating the U.S. isn't the only country that is or should be concerned about Beidou and its use as a tool for hard and soft power. Why it's important: Beidou has surpassed GPS in many ways, including having more satellites...

Image: Shutterstock What's new: A paper "Towards a Structural Framework for PNT Situational Awareness" by Andy Proctor that should be of interest to everyone in the community. Why it's important: Before you solve a problem, you need to realize you have one and its...

Image: Shutterstock What's new: A comprehensive article in Wired that discusses the need for government leadership a lot more than most similar pieces. Why it's important: Government leaders' concern, and most importantly action, are the only way the U.S. or any other...

Image: RNT Foundation The author of this article is president of the RNT Foundation. UK Moving Ahead, Wants Input on eLoran Program June 2, 2025 By Dana A. Goward System to be govt-owned, contractor-operated. The United Kingdom is continuing on its path toward having...

Image: Shutterstock The author of the below is President of the RNT Foundation. May 28, 2025 By Dana A. Goward Two federal efforts have been put on hold and experts with years of expertise in the PNT industry have retired, all changes that could affect the industry...

image: Advanced Navigation What's new: An impactful short video from Australian company Advanced Navigation. Why it's important: People love data, but usually only act based on trauma or emotionally impactful stories. This short video tells such a story. What else to...

Image: NOAA What's new: Another report on jamming and spoofing impacts to maritime, and an article on how maritime must adapt. Why it's important: 95% of the world's trade moves by sea. Disruptions to maritime can have a global impact. Unlike aviation, maritime does...

Image: Shutterstock What's new: Increasing concern about the vulnerability of almost all of America's infrastructure  - not just GPS. Why it's important: It highlights how fragile systems have become without adequate protections for primary systems or backups if they...

Image: Shutterstock What's new: An item in The Economist that covers a lot of familiar ground (though good reminders) and also speculates that China or President Trump may threaten or actually deny use of GPS/ other GNSS to other countries as a way to influence their...

Senator Cruz “...in these divided times it is…nice to see there are areas we can come together and work on with bipartisan cooperation.” Six years ago we celebrated with Senator's Cruz and Markey their sponsorship and passage of a bill requiring the establishment of a...