Image: Shutterstock Blog Editor's Note: We have written before about how far ahead China is establishing a robust multi-system architecture of PNT to support its tech and protect its society.   Constellations at LEO, MEO, and GEO, precisely measured fiber, terrestrial...

Blog Editor's Note: Some really neat stuff in to day's email from the Secure World Foundation. One of them is a set of fact sheets on ASATs that are great reference material. Also useful if you have trouble staying awake late at night. And there is a nifty info...

Image: mil.ru Blog Editor's Note: interesting note in this article that analysts say Russia has held back so far on massive jamming as it was interfering with their own communications. This could be jamming of comms systems or GPS/ GNSS jamming as many land mobile...

Image: Shutterstock Blog Editor's Note: Here is an interesting paper from December of last year the German Aerospace Center (DLR) submitted to ION. And there is an interesting video about this also which was posted recently (link below). Of particular interest to us...

Image: Shutterstock Blog Editor's Note: An interesting news item. Several thoughts. We are pretty sure China is not using GPS for its rocket launches.  Especially since China's origin story for Bei Dou, "the unforgettable humiliation," is about the perils of relying...

Image: Shutterstock Blog editor's note: If you haven't subscribed to our friend Dee Ann Divis' newsletter NaviationOutlook we highly recommend it. She is an award winning journalist who has covered PNT issues for years. We knew about the funding she describes in the...

Image: Shutterstock Blog Editor's Note: Just sayin...     The billon-dollar-a-day GPS mistake? May 25, 2022  - By Dana Goward Est. reading time: 2 minutes We all need to be careful that the numbers we are throwing around to support our case aren’t really...

Blog Editor's Note: An interesting thought piece.  In the long run, there are probably much less expensive and more capable satnav options than GPS, both for civilians and warfighters. And if we are going to do head in that direction as a nation, we should do it as a...

Image: Gen. David O. Thompson from AF.mil Blog Editor's Note - We are always concerned when we see media reports like this. They invariably fail to note that most DOD efforts only benefit the very small percentage of GPS users who are military.  M-Code? The "M" is for...

Image: NASA Editor's Note: Perhaps the hardest things for people to come to grips with are low probability, high consequence events. Yet, over time, even very low probability events will happen.  Severe space weather is a good example. Yesterday Space.com published an...

Image: RNT Foundation President Speaking to VOA Ukraine Blog Editor's Note:  RNTF President Dana A. Goward was the moderator for Defense Strategies Institute's second annual Assured PNT Summit last week at National Harbor near Washington, D.C. Here are his opening...

Image: Army Futures Command Blog Editor's Note: OK, this GPS World article is a bit of an ad for Hexagon/NovaAtel. And, full disclosure, they are one of our members/supporters. That said, the article raises several important points: The war in Ukraine has heightened...

Image: Shutterstock Blog Editor's Notes: We saw lots of reports last week like the one below. The implications being that Russia's GLONASS satnav isn't that great (true) and that GPS is better (also true). But not so fast with the western smugness that we are so far...

Image: Shutterstock Blog Editor's Note: Good article.. What more can we say?   It must be the time of year to think about Resilient PNT. Last week was a semi-annual meeting of the President's Space-based PNT Advisory Board (click to access video and slides).  And this...

Image: Shutterstock Blog Editor's Note: NASA's announcement says it all (emphasis below is ours) . You should attend.   NASA Aeronautics Research Institute (NARI) Position, Navigation, and Timing (PNT) Workshop May 24-25, 2022   Venue: This Event Is Being...

Image: Shutterstock Blog Editor's Note: An interesting video that posted just last week.  Good thought piece for next week's ATIS Workshop on Synchronization and Timing Systems in Denver.     https://www.youtube.com/watch?v=gKl0ln195_Q&t=6s  ...

Image: Space Development Agency An interesting and informative article by our friend Dee Ann Divis. Clearly a military-only LEO constellation that does several things, including PNT, has many advantages over GPS. Some advantages mentioned early in the article are...

Image: Shutterstock Blog Editor's Note:  The RNT Foundation has previously signed with the Open PNT Industry Alliance urging Congress to fund these important initiatives. We join the alliance now in urging the Department of Transportation to contract for commercial...

Image: Shutterstock Blog Editor's Note: Great new newsletter by award winning journalist Dee Ann Divis, kicking things off with this exclusive article! We heartily recommend you subscribe!   Laser Ranging Data Essential to Russian GLONASS System Dries Up After...

Image: USAF 2d Lt Jacob Lutz AFRL RV Blog Editor's Note: Good to see the possibility of the US military adopting some of these improvements. Of course, we can't have an optimistic note without adding some concerns: We hope these upgrades survive the programmatic...

Image: Shutterstock Blog Editor's Note: We heartily agree with the theme that China is likely the greatest threat in the long term. Also with the need to begin acting NOW so that America will be better protected in the future. And the best (only?) way to do that is...

Image: DIA Blog Editor's Note: Very interesting and informative report with few surprises. Iran and N. Korea are both mentioned as potential in-space threats.  Not a long read.  We highly recommend it. 2022 Challenges to Security in Space Excerpt from Executive...

Image: Shutterstock Blog Editor's Note: The author is President of the RNT Foundation.   Op-ed | Get the Bullseye Off GPS by Dana A. Goward — April 19, 2022 While some have opined that the solution is more and better GPS, the most effective and least expensive...

Image: Shutterstock Blog Editor's Note: The author is President of the RNT Foundation   To protect the electric power grid, timing is everything 4.19.2022 By Dana A. Goward According to an industry expert, “Electrical grids won’t fail without accurate time...

Image: Russia Internavigation Research and Technical Center of Advanced Navigation Blog Editor's Note: We recently commented on and published a link to an article in ARMADA about Russia's probably use of eLoran/Loran/Chayka in the war in Ukraine.  That article...

image: iPosi Blog Editor's Note: GPS signals already contribute to efficient spectrum use. Precise GPS timing enables multiplexing, simultaneous use of the same frequency by multiple users. This application allows 5G transmitters to determine if their physical...

Image: RNT Foundation Blog Editor's Note: A good article addressing tech and policy issues surrounding eLoran. It is only natural that these questions were asked since so few in the PNT community have experience in these areas. If your primary exposure to PNT...

Image: Shutterstock Blog Editor's Note: The article's co-author Dana A. Goward is President of the RNT Foundation.   Opinion Putin is holding GPS hostage – Here’s how to get it back By Dana A. Goward and Rep. John Garamendi  Apr 12, 04:15 PM “GPS is an enormous...

Image: RNT Foundation Blog Editor's Note: Another article about Russia using its version of eLoran in areas where GNSS is jammed or is likely to be jammed. Ukraine is certainly one of those places. We have seen reports of localized jamming by Russian troops in an...

Image: GPS.gov (We hope you will get to see their faces next time!) Blog Editor's Note: This meeting should be even more interesting than is usual. Note the board's formation of subcommittees to help focus on the many and varied issues related to PNT in the U.S.A....

Image: Shutterstock Blog Editor's Note: An excellent article, of course, by DR. Brad Parkinson about potential improvements to GPS/GNSS receivers.  It is always hard to add anything worthwhile to something written by DR. Parkinson. We will hazard one observation,...

Image: Shutterstock Blog Editor's Note: A good article on two independent assessments, both of which offered warnings about increasing interference, especially with GPS. CSIS even boasts a bit  about how their previous predictions have come to pass.  As we all might...

Image: Shutterstock Blog Editor's Note: There have been A LOT of articles about this recently, so we felt compelled to pass this one along.  We have to note, though, that EUROCONTROL and the US Maritime Administration have been complaining and warning about GPS...

Image: Shutterstock Blog Editor's Notes: An industry observer told me "Folks in electrical energy have decided they can't rely on GPS at all. They have to move completely away from it." The author of this article is President of the RNT Foundation. For additional...

Image: Spire Global Blog Editor's Note: Open source information about the ability to detect GPS/GNSS interference from space has been available for a while. It is good to see several DOD efforts to collect it. All systems have their limitations, though. Collection...

Image: Xona Space Systems   Blog Editor's Note: An interesting report from the Munich Satellite Navigation Summit.  There is a place in a complete and coherent PNT architecture for LEO constellations. Especially if the primary service is PNT, vice it being a...

Image: RNT Foundation Blog Editor's Note: The author is President of the RNT Foundation.     GPS backup funding continues Trump’s admire-the-problem approach March 24, 2022  - By GPS World Staff and Dana Goward The appropriation for fiscal year 2022 enacted...

Blog Editor's Note: This Volpe Transportation Systems Center opening is a redescribed position that better reflects a broader focus for the department's efforts. Looks like a great opportunity for the qualified person to make a big difference to the nation and the...

Image: Shutterstock Blog Editor's Note: An interesting article showing how China is continuing to erode US and GPS leadership. Bei Dou does have a number of features that GPS does not as indicated in the chart from Mitre below. But we think that a lot of the reasons...

Image: NASA & Shutterstock Blog Editor's Note: An interesting article with more background on the history of huge Coronal Mass Ejections than we normally see. While many claim GPS satellites are constructed to withstand the rigors of space weather, it is unlikely...

Image: Shutterstock Blog Editor's Note: A good reminder for folks who like to think having VORs, DMEs, and ILS mean aviation is not dependent on GPS/GNSS. We found the following lists in the article and notice particularly informative: AREAS IMPACTED Kaliningrad...

Image: UrsaNav Blog Editor's Note: A similar topic to one we published from GPS World, though a longer piece that incorporates events since the first one was published. It also discusses more related issues, and the fact that France once cooperated in a Loran system...

Image: eLoran transmission site at Wildwood, NJ used for government GPS backup demonstrations and research. Blog Editor's Note: Another summary of the problem and some technologies that can contribute to the solution. We note and appreciate it is published in Asia...

Image: Shutterstock Blog Editor's Note: The title sure gets it right, but the text sure gets it wrong. Ok, not entirely wrong. We do need to maintain a healthy GPS constellation that is as resilient and technically advanced as possible.  But the key to protecting GPS...

Image: Soviet era Tu-141 drone like the one that crashed in Croatia -  Shutterstock Blog Editor's Note: During an email exchange about this a former senior official opined "We will likely see more in the future." Disappointing that the darned thing flew over three...

Image: NASA, RNTF & Shutterstock Blog Editor's Note: Another fine piece by RNTF member Diana Furchtgott-Roth. She sums up the situation pretty well... but we always feel compelled to add our two cents. True that Congress never funded implementation of the National...

Images: Shutterstock Blog Editor's Note: We think The Guardian missed the point on the story below, so we created our own headline for this post. Reading the article carefully reinforces the idea that the Russian government coordinates most of its interactions with...

Image: Shutterstock Blog Editor's Note: A good recap of the issues and reminder of this open and unaddressed vulnerability.  As a reminder, the U.S. government has twice committed to establishing an eLoran system. Once in 2008 and again in 2015. Some variation of the...

Image; Hawkeye360 Blog Editor's Note: Two timely articles today. Pretty easy guess that jamming GPS would be a part of the Russian invasion. The question really is about scope. It seems to be localized, so far. And, as the second article points out, "Thank you for...

Image: Shutterstock NOTE - we object to this headline. The receivers are not 'bad.' They were built according to the rules at the time. If anything is 'bad' its the FCC's decades long failure to consider receivers as part of the radiofrequency system. Blog Editor's...