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GPSJam: Daily maps of possible GPS interference
- deleted 3y ago[deleted]
- pipo234 3y agoSome serious interference around areas of military tension: East Mediterranean, Black Sea South-West, Baltic Sea. Scary.
- ugjka 3y agoIt is protection against drones
- deleted 3y ago[deleted]
- awelxtr 3y agoI wonder why there is a high p of gps jam in Murcia. US bases are in Jaen and Sevilla
- RobotToaster 3y agoWhat's going on near london?
- cjrp 3y agoDoes seem strange, there aren't any NOTAMs mentioning it that I can see.
- samus 3y agoThere's Windsor Castle near the green area of the center (Windsor Grey Park). And some related military installations close by. Easy to see why it would be jammed...
- cpncrunch 3y agoNo. There wouldnt be jamming of civilian navigation right next to one of the busiest airports in the world. Most likely cause is lots of gps warming up at lhr.
- sidewndr46 3y agoshouldn't every airport show that, including major ones like Atlanta?
- cpncrunch 3y agoDo they use ground mlat there? That is the only reason i can think of that you would get cold gps transmitting. Lht was first operational ground mlat site, but i cant find a current list. This gpsjam site doesnt have much info on methodolgy. Seeing the data would probably show what is causing this issue.
- cameronh90 3y agoLondon is the busiest "airport system" in the world and handles a lot of international traffic, so there might be something unique about it that you don't see somewhere like Atlanta. That being said, it seems like London only has interference recorded today and every other day is green. I would imagine it's more likely to be a quirk of how the data is recorded rather than geniune jamming.
- 3y ago
- izacus 3y agoJust a note from the sites FAQ: the data is actually showing places where airplanes report LOW NAVIGATION ACCURACY via their ADS-B transponders. Since planes tend to default to INS navigation with use GPS, GLONASS, Galileo or other systems to supplement the drift, it may be subject to certain data skew (e.g. if there's an area on the world where most planes aren't equipped with GPS navigation system, have poor quality navigation tech or you might be seeing "jamming" where there might just be a common place on airline route where INS drifts).
- exitb 3y agoIt should be easy to correct for - only count aircraft that actually report good navigation accuracy sometimes.
- jjwiseman 3y agoIt only counts aircraft as experiencing interference if they have previously reported high navigation accuracy on their flight, and then begin reporting low accuracy. It's not going to just show places where INS drifts. However, it may show areas, typically military, where aerobatics or hard maneuvering are taking place, which can mask an aircraft's GPS antennae from the satellites.
- bragr 3y agoTo pile on about what this actually shows, further the data is sourced from ADSB Exchange so there's only data in areas where there are sufficient participants, and skews coverage towards Europe and North America https://map.adsbexchange.com/mlat-map/ https://map.adsbexchange.com/mlat-map/
- toomuchtodo 3y agoProject owner might be able to add data from stationary GNSS reference stations to improve global coverage of positioning accuracy available. https://geodesy.noaa.gov/CORS/ https://geodesy.noaa.gov/CORS/ https://epncb.oma.be/ https://epncb.oma.be/
- 3y ago
- eastern 3y agoIt shows no jamming over Ukraine. However, since the map actually shows the percentage of flights reporting low-navigation accuracy, what it really means is that there are no normal air traffic over Ukraine.
- kaoD 3y agoIt actually shows "no data" over Ukraine.
- AgentGreen 3y ago[flagged]
- Kuinox 3y agoRead the rest of what wrote this commenter.
- AgentGreen 3y agoThat s/he added in after I commented?
- Kuinox 3y agoI was in the mood to prove your bad faith. Here is a snapshot from wayback machine showing the commenter full comment, before you commented. https://web.archive.org/web/20231013140239/https://news.ycombinator.com/item?id=37868106 https://web.archive.org/web/20231013140239/https://news.ycom... So yes, you have read only the first line and replied.
- darkhorn 3y agoUkraine enforces no flight zone because of the war. Therefore there is no data.
- mardifoufs 3y agoWait, does that mean there are no flights to Ukraine at all? Or is it mostly over the war zone in the east?
- grishka 3y agoIt's very rough. There are GPS jammers in Moscow Kremlin, but they only affect the area maybe 1 km around red square. It has practical consequences of taxi apps freaking out when you pass this area. This map shows the entire Moscow, and a huge area around it, in red.
- tazjin 3y agoJamming is not only near the Kremlin, but also in large parts of Хамовники, near places like Лужники, ЦСКА (because of the mall & stadium), Лубянка, Сити and so on. Since this data is reported by airplanes I wonder if they experience more jamming because the jamming signals distribute easier upwards than through the jungle of buildings in the city.
- sidewndr46 3y agoI am guessing those places have jammers to prevent the attack by GPS guided munitions?
- grishka 3y agoProblems with GPS around Kremlin existed way before the war and I experienced them myself. Didn't know about the other places because last time I've been to Moscow itself (not the airports) was several years ago.
- ezconnect 3y agoWhat package is used to display the globe?
- haunter 3y agoMapbox GL JS https://docs.mapbox.com/mapbox-gl-js/guides/ https://docs.mapbox.com/mapbox-gl-js/guides/
- ldoughty 3y agoOuch, I hope GPSJam has a deal with them... Mapbox's pricing for this would be insane (for a hobby site) if you got a lot of attention... $1 per 200 page loads once you breach the free tier -- though I'll admit the free tier looks generous for a small hobby site.
- jjwiseman 3y agoNo deal. I get 50,000 map loads per month for free, and have only exceeded that once. That time, mapbox did give me a freebie because they liked the project.
- pietervdvn 3y agoMapTiler is _way_ cheaper and a bit more ethical. Also: you can double dip. When the free tier of mapbox runs out, swap over to MapTiler/StadiaMaps or any other provider of vector tiles.
- ezconnect 3y agoIs there a good free one I can use on a local server?
- iamphilrae 3y agohttps://maplibre.org/ https://maplibre.org/ is a free fork of Mapbox v1.x before they brought in their licensing model.
- scottmcdot 3y agoThere are civilian flights across Australia yet no data. Does anyone know why?
- londons_explore 3y agoPoor ADSB coverage there? You need to have one nerdy geek to record the data per ~500 mile circle of the globe. Thats why ocean coverage is bad too.
- jjwiseman 3y agoYeah, gpsjam.org can only show data where 1. aircraft are flying and broadcasting ADS-B, and 2. there's someone there to receive the messages (and send them to ADS-B Exchange). You can see a map of where ADS-B Exchange feeders are located here: https://map.adsbexchange.com/mlat-map/ https://map.adsbexchange.com/mlat-map/
- sidewndr46 3y agoInteresting that the entirety of Cyprus appears to show interference. That must be pretty annoying for anyone living on the island.
- internetter 3y agointerference does not necessarily impact people on the ground – these readings are from thousands of feet in the air and are hence exposed to a lot more signals.
- exitb 3y agoYou probably need to be in the line of sight of the interfering device, so it has much less coverage on the ground level.
- 4gotunameagain 3y agoThe invasion and subsequent occupation must've been pretty annoying as well ! Snarky jokes aside, in my experience GPS works okay in Cyprus, so the jamming must be localised somehow.
- skylanh 3y ago(major assumption) That's more than likely the position of the USS Gerald R. Ford (CVN-78). Its support planes are in the area [1], and it was sighted on Sep 28 near Italy [2], and if I understand it correctly, has been tasked to this area. 1 - https://twitter.com/wipljw/status/1712780646530118125 https://twitter.com/wipljw/status/1712780646530118125 2 - https://www.marinevesseltraffic.com/vessels/USS-Gerald-R.-Ford-(CVN-78)/CURRENT-POSITION/1/338803000 https://www.marinevesseltraffic.com/vessels/USS-Gerald-R.-Fo...
- jjwiseman 3y agoIt might not be obvious, but the date on the gpsjam page is an input field: You can change it and see the map for any day. If you do that, you'll quickly see that Cyprus is constantly, always being jammed.
- 3y ago
- jollyllama 3y agoUS border is interesting.
- jjwiseman 3y agoPeople always think we're jamming GPS near the border, but all those yellow and red hexes are in the Laughlin and Randolph military operating areas (MOAs). It's much more likely to either be military testing/training involving systems that cause GPS interference, or jet fighter training where aircraft maneuver so hard their GPS antennas are masked from satellites by the body of the aircraft. Map showing the possible interference overlaid on an FAA sectional chart showing the MOAs: https://i.imgur.com/vieGhgN.png https://i.imgur.com/vieGhgN.png
- jollyllama 3y agoTIL
- Bluecobra 3y agoIf you’re a business in Moscow or St. Petersburg and want accurate time, how are you supposed to sync your GPS clocks?
- chankstein38 3y agoI feel like this would be easier to read and interpret if the land were darker colored. The yellow and the land colors blend together when some solo hexagons are present.
- jjwiseman 3y agoI agree that the visualization is not optimal. I wish I was a better visual designer!
- chankstein38 3y agoYou're alright! Hindsight is 20/20 I am a backend dev not a visual designer either. It was straightforward for me to notice on my monitor that I'm used to etc but that doesn't mean on your monitor it looked the same. Just thought I'd share some feedback!
- ck2 3y agoI remember reading power plants in the USA, especially nuclear, have GPS scramblers. Might be some interesting locations to cross check.
- mullen 3y agoThere are no legal GPS jammers in the USA. In fact, the one of two things that will get the FCC on you really bad is to mess with GPS or Cell Phone signals. For Example, US Prisons want to jam Cell Phones but the FCC says no way.
- kube-system 3y agoThere are exceptions for the federal government itself and for companies that make devices for the federal government for special (basically defense) purposes. Obviously, stuff like this is made some how: https://www.rtx.com/raytheon/what-we-do/sea/ngj https://www.rtx.com/raytheon/what-we-do/sea/ngj
- jjwiseman 3y agoHello, HN. I made this site. Link to previous discussion: https://news.ycombinator.com/item?id=32245346 https://news.ycombinator.com/item?id=32245346 I'm curious about HN's take on a couple things: 1. Why haven't FlightRadar24, FlightAware, or any of the other flight trackers done this? Not enough people actually interested? I know there are companies that use GPSJAM to help brief their pilots. 2. Monetization! I can't really justify spending more time to work on projects like this one when they don't make money, and do cost (a little) money. But I absolutely do not want to turn these projects into another another job--I don't want contracts, obligations, deadlines. Do I try to get (very niche, but I bet they exist) advertisers to cover site costs and some of my time? Do I crowdfund for general development? Let me know your thoughts. And this isn't just for GPSJAM; I have other projects. For example... A couple other aviation related projects I've done recently: 1. The Global Aircraft Event Viewer: https://aircraft.social/events/ https://aircraft.social/events/ A near real-time map of higher level aircraft behaviors around planet Earth: Circling, "near misses" (RAs), takeoffs, landings, emergency squawks, and other stuff. A very early experiment, but I think it's kind of neat (especially the RAs!). 2. Closest Points of Approach: https://skycircl.es/cpa/ https://skycircl.es/cpa/ An analysis tool for checking to see just how close two (or more) aircraft got. For example, if you saw the New York Times Story "How a Series of Air Traffic Control Lapses Nearly Killed 131 People"[1], here's a link that visualizes and animates the scenario that happened in Austin, where a Fedex jet almost landed on a Southwest passenger jet: http://skycircl.es/cpa/?kmlurl=https://gist.githubusercontent.com/wiseman/b28e76fbadad13193db5cbd28956988a/raw/5ce33f0ca300fd3751fce054a6476787875e7d6e/FDX1432-SWA708.kml http://skycircl.es/cpa/?kmlurl=https://gist.githubuserconten... My tool estimates they got within about 150 feet (assuming idealized point aircraft without volume!)–The NTSB said they got "within 200 feet". 1. https://www.nytimes.com/2023/10/11/business/air-traffic-control-austin-airport-fedex-southwest.html?partner=slack&smid=sl-share https://www.nytimes.com/2023/10/11/business/air-traffic-cont...
- toomuchtodo 3y agoWould you be interested in handing it off to a maintainer owning it in a 501c3 as a public good? If not, do you want to continue to run it as a non profit public good with donations? I am willing to donate, just curious what the costs look like, and am a huge fan of projects like this (sensor networks/fabrics).
- speedping 3y agoLooks great! Is it possible to increase the resolution? Each hexagon cover too much area
- jjwiseman 3y agoThe map uses the H3 tiling system, and the cells displayed are resolution 4. Sometimes for specific cases I look at higher resolutions. For example, I believe this map I did during the still-unexplained Dallas-Fort Worth major interference event of 2022 uses resolution 6: https://twitter.com/lemonodor/status/1582403839004508160 https://twitter.com/lemonodor/status/1582403839004508160 The caveats of that tweet still apply to higher resolutions: Specifically that you start to see the effects of individual aircraft, which can be harder to interpret.
- rsync 3y agoIs there a way that a non-– aircraft actor could measure this? That is to say: could I establish a fixed ground station that measured these events and somehow augment this data from airplanes?
- kube-system 3y agoIf you take your own measurements you can do a lot more than what this site is doing, but with the disadvantage that you have to take your own measurements. For example, you could: 1. directly observe signal integrity with your own GPS receiver 2. compare the location your receiver reports with the actual known location 3. compare the location your receiver reports on GPS with the location a different GNSS network reports.
- myself248 3y agoYes, a lot of GPS receivers provide RAIM or jamming indication, if they detect signals they're not expecting. Gpsjam just isn't set up to accept such data. I think Galmon.eu may collect it along with all the other receiver-status data, but it isn't exposed in the main dashboard. You'd have to figure out how to extract it from the data, and I don't think anyone's done that yet, but we're in #galileo on OFTC IRC. The main problem with this approach is that it's hyper-local. Ground stations aren't moving so they don't cover a very broad area, and they're not evenly distributed or even necessarily in interesting locations. Quite the contrary; regimes that employ GPS jamming are likely also hostile to citizens reporting on same.
- sandworm101 3y agoOk, enough with the map nerd slight of hand. Put the Mercator projection on the top of the list of options, not the bottom. Mercator is the qwerty of map projections, the one users expect and are most likely looking for. It is also often the most useful as it is the projection designed for actual navigation.
- lxgr 3y agoI would hope that nobody uses this particular map for actual navigation! And how many people looking at maps on the internet really perform (globe-scale) navigation where it would even matter? Getting a sense for distances and/or proportions is arguably the most common use case, with “a sense for the precise bearing” a distant follower.
- 1024core 3y agoInteresting. India's Punjab state has a massive problem with drugs- and weapons-carrying drones coming over the border from Pakistan and GPS jamming is one of the techniques to fight those drones.
- deleted 3y ago[deleted]
- BugsJustFindMe 3y agoWhat's happening in that one spot in Texas over Casamigos Ranch?
- jjwiseman 3y agoIt's probably military testing and/or training. See my earlier comment about the Laughlin and Randolph military operating areas–Casamigos Ranch is under the Laughlin MOA.
- belter 3y agoWhat is going on in Spain in the triangle: Mazarron - Cartagena - Murcia ?
- PeterStuer 3y agoWhat's up in West London?