Image: Shutterstock What's new: The National Institute for Standards and Technology (NIST) is asking for comments about how to align its PNT Profile process with its Cybersecurity efforts. Why it's important: A least a couple reasons. First, it is good to have these...

Image: RNT Foundation What's new: While visiting Ragusa, Italy, we discovered a way of marking the hours of the day we had not heard of before - Italic hours which count the number of hours since the last sunset. Why it's important: Timekeeping has been essential to...

Image: Shutterstock What's new: A report that GPS-enabled terrain warning saved the lives of 190 airline passengers on the 2nd of February. Why it's important: This incident shows how important these safety systems are, and the criticality of them working properly....

Image: Aftermath of collision between Portuguese-flagged container ship Solong and oil tanker Stena Immaculate chartered to U.S. Navy. Source - social media via CNN UPDATE: An AIS reconstruction of the Solong/Stena Immaculate collision seems to show no GPS spoofing or...

Image: Shutterstock What's new: The organization Public Policy Polling surveyed 1,133 registered voters about the need for a backup system for GPS. Despite using a series of VERY leading questions in an attempt to persuade voters of the need, less than half of...

Image: Shutterstock Just a reminder that it's not only the Russians and Chinese. Every nation practices electronic warfare. Every nation needs a PNT architecture that is as robust and resilient as possible to guard its population against tactical and strategic...

Image: Argonne National Laboratory What's new: The president has nominated Sean Plankey to lead the Cybersecurity and Infrastructure Security Agency (CISA) at DHS. Why it's important: CISA is the agency at DHS that coordinates/ leads PNT issues for the department....

Image: EUSPA The below article was authored by RNTF President Dana A. Goward and appears in the March edition of GPS World magazine.   More on EUSPA’s first ever GNSS and Secure SATCOM User Technology Report March 10, 2025  - By Dana Goward In case you missed it,...

Images: Public Domain & Wikimedia Commons What's new: A good friend pointed out a LinkedIn post about Elizabeth "Ruth" Naomi Belville and her time distribution business.  We really enjoyed it. So we thought we would post about her also as a lighter weekend item....

Image: Shutterstock What's new: The Federal Communications Commission (FCC) is wading into the national discussion on PNT technology and policy in a big way. Why it's important:   The FCC has an important role ensuring PNT frequencies are allotted and remain...

Image: Shutterstock What's new: Saturday morning several aircraft approaching Reagan National Airport in D.C. received false alerts from their Traffic Alert and Collision Avoidance Systems (TCAS). The system warns when other aircraft are too close or are on collision...

Image: Old DHS HQ Sign - RNT Foundation What's new: We discovered this document from September. Why it's important: This is good info from DHS. Though a bit generic, it is important to "think about how to think about" this topic. What else to know: Interesting that...

Image: Shutterstock What's new: NextNav has come out with another document purporting to support that its terrestrial PNT scheme could work and that the FCC should give it lots of expensive spectrum for free to underwrite the effort. Why it's important: There are now...

Image: Shutterstock What's new: Growing awareness of the importance of cyber, including GPS in agriculture. Why it's important: Precision agriculture is more environmentally friendly and yields more food per acre with much less fertilizer and pesticide. 68% of large...

Image: Shutterstock What's new: We discovered this interesting fact sheet Space Force issued.  Why it's important: When GPS was first launched space was a fairly safe place to put things. Now it is pretty dangerous. Not only is it a warfighting domain, it is a lightly...

Image: Shutterstock What's new: The National Association of Broadcasters (NAB) has asked the Federal Communications Commission to require television stations to start using the ATSC 3.0 standard for broadcast. The ATSC 3.0 signals will include the Broadcast...

Image: Shutterstock What's new: The FAA, partnering with the Naval Air Warfare Center, has taken the first steps toward approving the use of CPRA on aircraft. The current step is an RFI for a study, but it is progress nonetheless. Why it's important: The use of CRPA...

Image: Shutterstock What's new: Adam Price from Spirent offering a look ahead for PNT in 2025. Why it's important: A huge rise in GNSS interference makes the future of PNT and its users uncertain and may cause sudden and significant changes. As a prominent player in...

Image: Micheal Jones, Roke What's new: We are a bit late posting this, but the U.S. government has finally decided to take Controlled Reception Pattern Antennas (CRPA) off the ITAR (International Trafficking in Arms Regulations) list of items that count as weapons or...

Image: GPSPATRON What's new: A study of the impacts of GNSS interference in the Baltic at sea level (maritime and ground level impacts) by GPSPATRON and Gdynia Maritime University. While we have had anecdotal reports of interference impacting maritime and...

Image: GPSJam.org What's new: The Norwegian radio frequency regulator, Nkom, said (today, we think) that they have not detected any GPS disruption so far this month in Finnmark, the country's northern and easternmost province. Why it's important: Aviation in Finnmark...

Image: Shutterstock What's new: A press release from the National Assn of Broadcasters (NAB) about their Broadcast Positioning System (BPS) that uses television signals to provide positioning, navigation, and timing (PNT) services. Also, BPS supported by eLoran timing...

Image: Shutterstock What's new: The RNT Foundation filed additional comments with the FCC opposing NextNav's petition to be granted a huge chunk of spectrum.  We had previously filed comments in September. Why it's important:  NextNav made several statements to the...

Image: Real time display of aircraft being spoofed courtesy SKAI Data Services What's new: Dr. Okuary Osechas and Dr. Gary McGraw continue to refine their December paper that examined navigation systems needed in aviation to complement GPS/GNSS in order to achieve...

Image: Shutterstock What's new: A Mark Berkowitz opinion piece on the way forward with GPS (hint - it is not R-GPS). Why it's important: R-GPS would be billions of dollars. What to do with the existing GPS constellation is also an expensive and current topic of the...

Image: Shutterstock What's new: Slides from the National Air Space Roundtable on Space Weather. Interesting info, especially for those not familiar with the issue. Why it's important: With all the focus on malicious jamming and spoofing recently, folks tend to forget...

Image Shutterstock Viewpoint Preventing More Deaths from GPS Interference By Dana A. Goward Thirty-eight people died on Christmas Day 2024 be-cause of GPS disruption. It is a tragic reminder that the problem has gone unaddressed for too long. Around 7:30 a.m. on Dec....

Image: Shutterstock What's new: More coverage in popular media about the vulnerabilities of satnav. Why it's important: The issue won't be addressed unless political leaders are motivated to do so. One way to do that is through popular concern. What else to know: From...

Image: Munich Residence venue for part of the summit - Shutterstock What's new: The annual Munich Satellite Navigation Summit's theme is "Resilient PNT - Backbone of Autonomy & Critical Infrastructure!" Why it's important: This event and the European Navigation...

Image: US DOT and DOD The below is an issue paper we are circulating to members of the new administration and congress in the U.S. There is a link to a pdf version at the bottom of this post. Please share this post and/or the pdf as widely as you are able. Lack of...

Image: Shutterstock What's new: Some detailed information about Locata's over-the-air time service. As far as we know, it is unique in the level of precision (picoseconds) delivered over the air. Why it's important: Time/timing is needed for a host of critical...

What's new: India's Space Research Organization (ISRO) has placed it's 100th satellite in orbit. It is a replacement for one of the 7 in the NavIC regional navigation satellite system (RNSS).. Why it's important: India, now the world's most populous country, is one to...

Image: Shutterstock What's new: After Russia forces fired on an Azerbaijan Airline plane causing it to crash land with the loss of 38 lives, the Russian Federal Air Transport Agency issued a bulletin about using GNSS in conflict zones.  It recommends more pilot...

Image: Shutterstock What's new: We heard back from the FAA yesterday about our GPS interference report (see yesterday's post)  the SAME DAY - and it was a SUNDAY!  They said the GPS interference the aircraft we were traveling on experienced was likely from a NOTAMed...

Image: GPSJam.org What's new: The guy who writes all the time about GPS interference got to experience it, in a small way.  Why it is important: The interference seems like it has been on-going for several days but the FAA has not issued a NOTAM about it. That is a...

Image: Shutterstock What's new: A press item about disruption that is not about aviation or maritime. Why it's important:  All kinds of applications and infrastructures can be impacted. We have mostly seen disruption effects in aviation and maritime because the...

Image: Shutterstock What's new: A comprehensive review of LEO PNT projects around the world. Why it's important: LEO PNT has enormous potential. And there is so much going on it is hard to keep track. We have been seeking a compendium like this for years! What else to...

Image: Loran Tower circa 1995, US Coast Guard Note: This article appears in the January print edition of GPS World and is an expanded version of one that appeared in November on their website. We are posting it here because: It has additional and updated information,...

Image: RNT Foundation What's new: The Department of Transportation recently posted its PNT Strategic Plan. The document is dated December 2024, but it was only posted on the 17th of January. Why it's important: The document lets everyone know how and what the...

Image: FullDrone.com What's new: Chinese company DJI, the maker of about 70% of consumer-grade drones, sent a software update last week removing default geofences from its products used in the United States. Why it's important: Geofencing had prevented these drones...

Image: Defense Strategies Institute What's new: Defense Strategies Institute, an RNTF member, announced its annual Assured PNT Summit. Why it's important: This event is unique in our experience as it is held in Washington, D.C. and is able to attract some speakers who...

Image: Shutterstock What's new: More efforts to use Earth's magnetic field to navigate. This time leveraging AI. Why it's important: Navigating this way does not rely on RF signals that could become unavailable. And no additional infrastructure is required. What else...

Image: Shutterstock What's new: An article about a celestial nav system that can be strapped on drones. Why it's important:  It is relatively easy to jam or spoof GNSS signals on most drones making them ineffective. And we know of instances when accidental...

Image: Shutterstock Vol 35 No 1 Winter 2025 2024's PNT Advisory Board U.S. endangered, leadership needed Massive increases in threats and disruption of GPS services over the last four years, advances by America’s competitors, and little progress on improving national...

Image: Shutterstock What's new:  Two items, possibly related. Info that Russia is experimenting with PNT from cellular on its drones in Ukraine for GPS-denied environments. An item about China creating a military 5G network that can be deployed on mobile assets. Why...

Image: Shutterstock What's new: Another report about the serious impacts of GPS jamming and spoofing in aviation. Why it's important: Eventually people are going to die. If they haven't begun dying already. We are confident Russian forces did not intend to shoot down...

Image: Shutterstock What's new: Russia is using Chinese anti-jam antennas on their Iranian-made drones to attack Ukraine. These antennas counter much of the Ukrainian jamming they use to protect themselves. Why it's important: Drone warfare has become an major part of...

Image: GPSJam.org & RNT Foundation What's new: Persistent GPS interference detected in and around Sofia, the capital of Bulgaria beginning on 12 December 2025. Why it's important: PNT signals from GPS underpin all kinds of critical infrastructure and applications....

Image: Russian Space Systems What's new: An interesting look at one of the devices in Kaliningrad that is being used to cause so much trouble. Why it's important: Well, more interesting than important, maybe. The impacts of using this thing are important. And they are...

Image: Shutterstock Blog editor's note: This is important. If you have expertise in this area, you really should comment. Below are excerpts from the NTIA notice in the Federal Register. Access the full notice here. Impact of L-Band MSS ‘Direct-to-Device’ Operations...