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I have an amateur built experimental airplane, and on my first flight, GPS wasn't working. It was working on the ground, so I figured a bad coax cable or someth
by kevin42 2y ago
I have an amateur built experimental airplane, and on my first flight, GPS wasn't working. It was working on the ground, so I figured a bad coax cable or something from the vibration. When I landed it started working again, but later in the day it wasn't. A few days later I found out that the nearby Air Force base was testing GPS jamming, and there was even a NOTAM about it.
There's a site that tracks GPS jamming: https://gpsjam.org/ https://gpsjam.org/
- ge96 2y agoWhat is that area to the right of India?
- deleted 2y ago[deleted]
- inejge 2y agoMyanmar, alias Burma. They're having a hot civil war since 2021. (They've had tensions and insurgencies for as long as they've been an independent state.)
- pixl97 2y agoMyanmar, which is currently a conflict zone.
- ajross 2y agoMyanmar. Unstable autocracy, recent coup, ongoing uprising. A huge mess, and exactly where you'd expect the ruling party to be trying to eliminate navigation aids.
- GJim 2y ago> to the right *East
- alphan0n 2y agoI’ve never seen a map that has each locality in its primary language..
- biker142541 2y agoIt's the default OpensStreetMap style, which was never intended as a cartographic basemap for visualizations. Its purpose is to facilitate editing of the underlying data... but it's also one of the "free" options out there and integrated into most map library examples. ("free" because it's community-supported and heavy usage is discouraged, https://operations.osmfoundation.org/policies/tiles/ https://operations.osmfoundation.org/policies/tiles/)
- jjwiseman 2y agoGPSJAM had a non-free map for years that didn't have this issue, but as the site got more traffic I could no longer afford to pay for it.
- biker142541 2y agoThat's fair! While understandably it isn't probably a top priority, I'd highly encourage checking out https://docs.protomaps.com/pmtiles/maplibre https://docs.protomaps.com/pmtiles/maplibre . It can be nearly free to directly hit a single planet pmtile file, especially with cdn in front, and slightly more to put up a server in front of it (imo, not needed). Anyway, awesome site regardless, and OSM tiles are fine if not abusing their hosting (this isn't I'm sure).
- crote 2y agoI wish that website had some kind of timelapse functionality. It would be very useful to see how jamming in an area changes over time.
- KennyBlanken 2y agoThere are multiple sites that try to infer whether jamming is happening. https://gpsjam.org/ https://gpsjam.org/ https://spoofing.skai-data-services.com/ https://spoofing.skai-data-services.com/ https://www.flightradar24.com/data/gps-jamming https://www.flightradar24.com/data/gps-jamming Ukraine is of course a huge hotbed of jamming, but every time I've looked, there's been jamming on the US/Mexico border and a bit north of Texas around an airbase. There's also a lot of info available here: https://www.nstb.tc.faa.gov/ https://www.nstb.tc.faa.gov/
- jjwiseman 2y agoThe apparent interference in Texas is almost always fighter pilots doing training. During aggressive maneuvering the aircraft fuselage can mask the GPS antenna, causing the aircraft to lose GPS accuracy.
- folli 2y agoFighter jets emit ADS-B? I know it's only training, but I'm curious?
- jjwiseman 2y agoGo to https://globe.adsbexchange.com https://globe.adsbexchange.com and once it loads, press "u" to show only military aircraft. You'll see bunches of helicopters, transports and tankers, trainers like T-6 Texans and T-38 Talons, and once in a while an actual fighter or ground attack aircraft.
- AsianOtter 2y agoadsb.exposed has a dedicated section on F-16: https://adsb.exposed/?zoom=5&lat=43.4805&lng=-110.7608&query=266306c974d8e2f40505f60c0326215d https://adsb.exposed/?zoom=5&lat=43.4805&lng=-110.7608&query...
- KoolKat23 2y agoThis map is great,very interesting. curious that GPS is jammed over Gdansk, Helsinki and Tallinn.
- lawrenceduk 2y agoIt’s because they’re next to Kaliningrad, that weird Russian exclave
- bitcurious 2y agoAnother way to see that geography is as approaches into Russia. Gdansk borders Kaliningrad, Helsinki and Tallinn straddle St Petersburg.
- jjwiseman 2y agoRussia has been jamming GPS over Finland, Estonia, and Poland on and off for a couple years, and it's been at its peak now for several months. Sometimes flights have to be canceled. Tartu airport in Estonia was closed for a while[1] because the only instrument approaches it has were GPS-based. Even worse than jamming is spoofing, which Russia also does. With jamming, you and the aircraft's systems both know what's happening. Spoofing isn't as easy to detect, as the GPS system can report the wrong location but think it's highly accurate. Spoofing (and to some extent jamming) can have a persistent effect on aircraft systems even after they move out of range of the jammer/spoofer, which can lead to degraded navigation accuracy for the rest of the flight. It's a whole deal. Russia is messing with strategically important systems of many European countries, and decreasing civilian aviation safety, and they rarely get called on it. For a long time there was reluctance to even name Russia as the culprit. 1. https://www.heise.de/en/news/GPS-jamming-no-more-flights-to-the-airport-in-Estonia-for-the-time-being-9703197.html https://www.heise.de/en/news/GPS-jamming-no-more-flights-to-...
- thaumasiotes 2y ago> Russia has been jamming GPS over Finland, Estonia, and Poland on and off for a couple years, and it's been at its peak now for several months. Sometimes flights have to be canceled. I feel like we had airports before we had GPS. If this is a regular thing, shouldn't we have ways of using the airport without hoping that the jamming is having an off day?
- nradov 2y agoIs it common practice to go flying without checking for a NOTAM that might impact your intended route? (I'm not trying to insult you or anything, I'm not a pilot and don't know the standard procedures for dealing with those.)
- jrockway 2y agoShould you brief the NOTAMs? Yes. Is it common to miss one? Also yes. Go look at the ATC YouTube channels and you will find lots of people being intercepted by fighter jets even though they use Foreflight. Another problem is NOTAM spam; it seems like, in some areas, there are a bunch of NOTAMs that aren't very important but that you still have to read through to see if they're relevant. "We're testing GPS jamming" or "we will send a fighter jet if you fly into this rectangle" look a lot like the more common "taxiway T at Middle Of Nowhere Municipal Airport is out of service until 1/1/2038".
- jameslk 2y agoCould be a good opportunity for using an LLM to summarize and extract anything important?
- buildsjets 2y agoHere’s a critical NOTAM that was missed. Translated, it means, if you fly here, the Russians will shoot your ass down. And so they did. But nothing encodes that information in the NOTAM so there is nothing for an LLM to summarize and extract. Expecting an AI to compensate for poor system design is magical thinking. A1492/14 NOTAM Q) UKDV/QRTCA/IV/BO /W /260/320/4822N03807E095 A) UKDV B) 1407141800 C) 1408142359EST E) TEMPO RESTRICTED AREA INSTALLED WITHIN FIR DNIPROPETROVSK BOUNDED BY COORDINATES : 495355N 0380155E 485213N 0372209E 480122N 0370253E 471352N 0365856E 465018N 0374325E 465900N 0382000E 470642N 0381324E THEN ALONG STATE BOUNDARY UNTIL POINT 495355N 0380155E. RESTRICTION NOT APPLIED FOR FLIGHTS OF STATE ACFT OF UKRAINE. F) FL260 G) FL320) Besides that, would the developer of the LLM accept liability for accidentally filtering out important NOTAMS, or hallucinating NOTAMS that did not exist?
- alexpotato 2y agoWanted to highlight how GREAT the FAQ section is on that page. It feels like each question on that list is one that the author actually received and answered in an easy to understand format. Makes me wish for the early days of the Internet where FAQ writing was good practice and writing a great FAQ was considered something worth celebrating.
- jjwiseman 2y agoThank you! I haven't updated that page in a long time, and there are a few things I should add. Some possibilities: * Does this map show spoofing? No. * How come sometimes I see aircraft flying over Ukraine? That's GPS spoofing. * [Add Myanmar & Kashmir to the list of conflict zones.]