Image: Shutterstock What's New: Sweden's military and civil defense leaders have warned the public about the possibility of war. Why It's Important: Russia has threatened to invade Finland and Sweden if they join NATO. Finland already has, and Sweden is on track to do...

Image: Texas Transportation Institute What's New: A podcast by Texas Transportation Institute Agency Director and CEO, Hon. Greg Winfree, discussing GPS as an under-appreciated, silent utility. Why It's Important: GPS is America's primary source for positioning,...

Image: Plane Finder/ X-Twitter UPDATE: We talked with Zach Clements at the University of Texas Radio Navigation Laboratory about this. When he looked at the reports on ADS-B Exchange for one of planes that had been reported being spoofed into square patterns, he found...

Image: GPSJam.org What's New: Analyses from the Univ. of Texas Radio Navigation Lab and Stanford of Russian jamming in the Baltic. Why It's Important: Electronic warfare is warfare. Russia is attacking, albeit at a low level: The ships and aircraft of other nations...

Image: Shutterstock What's New: Remarks at the Transportation Research Board meeting this week by RNTF President Dana Goward. Why It's Important: We must start thinking about transportation infrastructure as more than concrete and asphalt. Investments in PNT are much...

Image: Shutterstock What's New: A paper by RNT Foundation member Hexagon NovAtel. Why It's Important: Solar activity is always a concern to GPS/GNSS users. The sun is moving toward solar maximum estimated for the summer of 2025.  What Else to Know: While significant...

Image: Zach Clements and ADS-B Exchange What's New: Circle spoofing, previously only observed in receivers aboard ship and on land, is now being observed in aviation. Here are depictions of aircraft receivers being spoofed off course, and then into reporting they are...

Image: Shutterstock What's New: A great article with an important message. Russia is using jamming and spoofing against its neighbors in a low level, yet dangerous, conflict Air travelers are being put in danger. Why It's Important:  Air travel wasn't ready for...

Image: GPSJam.org/RNT Foundation What's New: Adding to the extra jamming we saw in the Baltic over Christmas, we saw some extra on New Year's Eve. Why It's Important: This helps demonstrate how easily GPS and other GNSS can be disrupted. What Else to Know: While there...

Image: Shutterstock What's New: An article reminding us of one of the lesser publicized hazards to objects in space. Why It's Important:  The U.S. has more satellites and is more reliant on space than any other nation. The U.S. is far-over reliant on space for PNT. ...

Images: GPSJam.org What's New: A dramatic increase in apparent interference with GPS signals over northern Poland and southern Sweden (not including Stockholm) seen on Christmas day. And it seems to have increased yesterday. Why It's Important: All manner of...

Image: DANIELR VIA TWITTER What's New: An especially inexpensive, and perhaps especially effective, way to counter/greatly mitigate drone comm link jamming. Why It's Important:   As the article says, electronic warfare tends to be a game of 'cat-and-mouse' where one...

Image: Shutterstock ************************** UPDATE 23 December - Our friends at Stanford pointed out that we misunderstood the article.  The satellite in question has been broadcasting the signal continuously since 2021. Re-reading the article it seems the "spikes"...

Image: Shutterstock What's New: The auto industry seems to be coming more aware of the implications of GPS/GNSS vulnerability, especially as it pertains to autonomy, or even driver assist. Why It's Important: It is certainly a safety issue. And as the article says,...

Image: Anonymous from Reddit Spoiler Alert - Mt. Everest is 29,032 feet. What's New: Video and audio from an aircraft flying near Jeddah, Saudi Arabia. Its GPS system was apparently experiencing some kind of interference and warning the pilot of terrain that wasn't...

Image: USAF What's New: Reporting on concerns about GPS compared to other national GNSS expressed at the most recent meeting of the President's National Space-based PNT Advisory Board. Why It's Important:  GPS has contributed to U.S. prestige and global leadership for...

Image: Shutterstock What's New: Well, perhaps not new, but certainly an important reminder that: China is not our friend. They were the world's leading civilization for 5,000 years, then defeated and exploited by the west for 175 years. They want back on top and see...

Image: LeoLabs What's New: A discovery by Australia's LeoLabs that Chinese and Russian space activities they might want to hide often happen when folks in the U.S. are celebrating a holiday. In other words, less likely to be paying attention. Why it's Important: The...

Image: John Wiseman What's New: Graphics posted on X (Twitter) by John Wiseman, the gent behind GPSJam.org. Why It's Important: The graphics show areas in the Middle East where spoofing has been occurring, and the false locations being transmitted. John is clearly a...

Image: RNT Foundation What's New: The European Space Agency wants to award a contract for a prototype miniaturized navigation receiver that uses both GNSS and eLoran. Why It's Important: In our view, this is a seismic shift in Europe's attitude toward eLoran.  In...

Image: RNT Foundation What's New: RNTF President Dana A. Goward's brief comments (6 minutes) to the U.S. President's National Space-based PNT Advisory Board last week. Why It's Important: In the comments he: Describes the foundation's purpose and activities Thanks...

Image: Shutterstock What's New: The International Air Transport Association (IATA) continuing concern over GPS/GNSS disruption. Why It's Important: Major airlines have a lot of influence with decision makers in governments. IATA is one of their forums to discuss...

Image: Rockwell-Collins/Smithsonian What's New: The December issue of GPS World is chock full of articles about the history of GPS, mostly told by folks who were there. Why It's Important: There are A LOT of lessons to be learned and relearned. Things like: There was...

What's New: The agenda for this week's meeting of the President's Space-based PNT Advisory Board in Houston. Why It's Important: Members of the PNT community can find the presentations and discussions by government officials, academics, and industry reps informative....

Image: Shutterstock What's New: Drones apparently modified by hand to help overcome electronic warfare (EW). Why It's Important: It shows the increasing importance of EW on this and other battlefields. And how important forces at the tactical level think it is to...

Image: In-Q-Tel What's New: In-Q-Tel being interested in PNT issues. The discussion of technology and policy issues in the videocast may be familiar to many of our readers. Why It's Important: In-Q-Tel serves the U.S. government intelligence and national security...

Image: Shutterstock What's New: A systematic way of looking at how spacecraft can be attacked, intentionally damaged, and otherwise compromised. The matrix lists 83 primary techniques and dozens more sub-techniques. Why It's Important: Many folks think that putting...

Image: Ops Group What's New: Spoofing incidents which have seemed to be trying to lure aircraft into Iranian airspace, some have said near missile emplacements, have been found to likely be: Coming from just outside Tehran. Intended to deny GPS service rather than...

Image: National Time Service Center, Chinese Academy of Sciences What's New: A paper published yesterday providing more information on China's plans to expand their eLoran service. The paper also confirmed China is using eLoran timing signals to increase the security...

Image: Russian Defense Ministry What's New: Russia may have finally found its feet bringing its electronic warfare (EW) capabilities to bear.  Why It's Important: This can be really important, if not decisive, in the conflict. Huge numbers of weapons from expensive US...

Image: Shutterstock What's New: A real world case study of the impact of GPS jamming on electrical grids. Installation of anti-jam antennas seems to have helped. Why It's Important: GPS signals are used by virtually every technology and many, many applications, yet...

Image: U.S. Space Force/ Ethan Johnson What's New: A discussion of diversity of platforms and uses for GPS and the need for diverse alternatives. Why It's Important: Military, and eventually civil users will need to switch from over-reliance on GPS (a single point of...

Image: Shutterstock What's New: Jamming and spoofing being covered by the New York Times. This important topic is getting broader attention. A particularly good point raised in the article is that the GPS tech used in commercial aviation is from decades ago when...

Image: GAO/DOD What's New: A guest blog post by two officers of Cubic Corporation that correctly points out the need for the military to develop and implement non-GPS PNT.  BTW - we prefer to say things like "GPS+" verses "beyond GPS." GPS is going to be part of the...

Image: Shutterstock What's New: A new standard from SAE - "Toughening a PNT system with COTS in-line GPS/GNSS Jamming Protection" Why It's Important: Standards can be very effective ways to encourage adoption of beneficial practices. Many engineering organizations...

Image: Aviation Week Network Happy Saturday!  Here is an interesting graphic timeline of more than 50 years of GPS history by Aviation Week. Here's another fun fact. This timeline begins with the launch of Transit in April of 1960, a joint project of DARPA and Johns...

Image: Russian Defense Ministry What's New: An article dealing with two separate and distinct issues. Heavy GNSS jamming and other counter-UAV operations in Ukraine, and development of electric VTOL air taxi service at Tampa's airport. Why It's Important: Though the...

Image: Shutterstock What's New: A thoughtful, as usual, opinion piece by Brian Chow. He mentions how folks in Space Force are talking about a Space Pearl Harbor and how to prepare. Why It's Important: Space, especially GPS and space-based PNT, is far more critical to...

Image: GPSPATRON What's New: GPSPATRON has released its report on this year's Jammertest in northern Norway. The event this year focused on not just denial, but deception. Why It's Important: As GPS/GNSS use grows, so do the ways in which malicious actors try to...

What's New: Mr. Kevin Mulvihill has recently been named the Department of Defense Deputy Chief Information Officer for Command, Control, & Communications. Why It's Important: Within the Department of Defense, the Chief Information Officer is "the principal staff...

Image: John Wiseman (@lemonodor) who runs GPSJam.org What's New: Interesting depictions and video of warnings about possible outages for various GPS-enabled aviation traffic and safety systems. Why It's Important: GPS is essential to virtually every technology system...

Above Image: Shutterstock  Katherine Dunn photo by Andrew Neilson What's New: RNT Foundation friend and former Platts and Fortune Magazine reporter Katherine Dunn is under contract to author "Right Here, Right Now." She says it will be a social and political history...

Image: RNT Foundation and Shutterstock What's New: December 17th marks 50 years since GPS was approved as a program. The RNT Foundation is sponsoring a celebration of this anniversary at Houston's South Shore Harbor Resort and Convention Center on the 5th of December....

Image: Shutterstock What's New: A Ukraine-developed GNSS jamming system used for protection primarily against drones. Why It's Important: Navigation warfare - using, denying, spoofing, navigation systems - has become a prominent feature of modern combat. This is...

Image: MS Emily Goward-Redden What's New: An interesting discussion of more resilient u-Blox receivers and eLoran in the context of European PNT needs. Why It's Important: While the EU and US have done some science experiments, the UK is the only western nation we are...

Images: Ukraine Defense Ministry What's New: Another example of how GPS impacts nearly everything and its importance in modern warfare. Why It's Important:  "... a Pole-21 crew has to be very judicious with how it uses its jammer—switching it on only when there are no...

Image: US DOT Volpe Center What's New: Another look at what DOT is doing and a bit of speculation on why and where it is headed. Why It's Important: Understanding the government's motivation and therefore, perhaps, its goals and next steps can be key for companies...

Image: Shutterstock What's New: An interesting take by timing experts Richard Hoptroff and Steve Suarez. Why It's Important: It is always good for folks in the PNT community to remember that most of the world "doesn't get it" when it comes to the dangers of...

Image: RNT Foundation & GPSJam.org What's New: Reports from Romania and aviation sensors demonstrate the breadth and impact of GPS jamming on a country not involved in conflict, but unlucky enough to be in the neighborhood. Why It's Important:  The geographical...