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Peeking underground with giant flying antennas
- OutOfHere 2y agoCould this help detect landmines?
- hausen 2y agoYes, if you scale down the antenna/coil (and the aerial vehicle). https://www.smithsonianmag.com/innovation/a-ukrainian-teenager-invents-a-drone-that-can-detect-land-mines-180980826/ https://www.smithsonianmag.com/innovation/a-ukrainian-teenag...
- rolph 2y agothis particular rig is too lo-res for that. you need a different detector setup, and slower closer flight.
- polishdude20 2y agoI wonder if drones could be used for this then?
- macnetic 2y agoA spinout from my university, UMag Solutions is detecting UXO and mines in Ukraine using special drone-mounted magnetometers.
- lsaferite 2y agoThey can and they are. For instance: https://sensysmagnetometer.com/products/magdrone-r4-magnetometer-for-drone/ https://sensysmagnetometer.com/products/magdrone-r4-magnetom... https://sensysmagnetometer.com/unexploded-ordnance-uxo/ https://sensysmagnetometer.com/unexploded-ordnance-uxo/
- lsaferite 2y agoYou could use this: https://sensysmagnetometer.com/products/magdrone-r4-magnetometer-for-drone/ https://sensysmagnetometer.com/products/magdrone-r4-magnetom... We have the little version of this sensor. It's quite interesting.
- buildbot 2y agoI’m struck between the similarity between this and the big antenna (?) array that the ballon that went over the USA carried…
- lupusreal 2y agoThat thing flew over/near Malmstrom Air Force Base (ICBM silos.)
- jjwiseman 2y agoUsing OpenStreetMap data to map stuff the balloon flew near: https://youtu.be/sQ_sEWodIrc?si=LUfvRR4kvlqQyrZ1&t=16 https://youtu.be/sQ_sEWodIrc?si=LUfvRR4kvlqQyrZ1&t=16
- dylan604 2y agoI had never heard of this MUNDUS tool before, but it looks like a very interesting project.
- 082349872349872 2y agoImagine using multiple Project Loon balloons as a giant SAR.
- toomuchtodo 2y agoPotentially related: https://news.ycombinator.com/item?id=30022626 https://news.ycombinator.com/item?id=30022626
- hagbard_c 2y agoSomething similar was experimented with where I live (western Sweden) to see if the technology is usable to determine the stability of soil layers against land slides. The area around the local river - Göta Älv - is known to be prone to landslides so it was deemed to be a good test subject. A helicopter carrying something which was best described as an enormous chicken run on a long line criss-crossed the area mapping it with what I assume was ground-penetrating radar. The results [1] show our farm to lie on an extremely landslide-prone part of the river valley and I know there have been landslides here in the 60's so there is something to this method. The subsoil consists of silt (the fraction over clay) on top of bedrock, as long as the water content stays below a certain percentage it has quite a high bearing capacity but once it gets over that it easily liquifies. [1] https://ext-geodatakatalog-forv.lansstyrelsen.se/PlaneringsKatalogen/GetMetaDataById?id=323f5b12-6dc7-41d7-859b-81f5d49c5fa8_C https://ext-geodatakatalog-forv.lansstyrelsen.se/PlaneringsK...
- Archelaos 2y agoIs this used in archeology?
- cebert 2y agoDid you read the article? It discusses the archaeological applications.
- mindcrime 2y agoFrom the HN guidelines[1]: Please don't comment on whether someone read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that". [1]: https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html
- IncreasePosts 2y agoDo you think the spirit of that rule is to bludgeon someone with it?
- Archelaos 2y agoThe article mentions the ‘traditional’ way in which magnetic surveys are carried out on the ground in archaeology. When it comes to helicopter surveys, the examples are only from geology. My question was meant to refer to helicopter surveys. I would therefore like to rephrase it: Have helicopters indeed already been used for magnetic surveys in archaeology?
- foreigner 2y agoCan it find tunnels?
- aaron695 2y agoWe did this for anode placement. You put a anode x hundred yards away from a pipeline to stop it rusting. We used to send people into the field with metal spikes to measure conductivity to find the best locations. You want the anode in a place of high conductivity. This was used instead. Personally I was dubious on the economics of a few of the things that was done on the project, doing this compared to using people was a no brainer even if it was $$$$. But all this money and as usual the SCADA was crap. The rig was from mining if you wonder about it's everyday use.
- ehaskins 2y agoI got to watch them operate out of a nearby airport for about a week back in 2022. Definitely an unusual sight. I'm sure there's more data like this, but that survey seems to have produced a large amount of raw data which is publicly available. https://www.sciencebase.gov/catalog/item/636c0b28d34ed907bf6abb14 https://www.sciencebase.gov/catalog/item/636c0b28d34ed907bf6...
- defrost 2y agoThe Hackaday article is referring to Geoscience Australia geophysical surveys, Helicoptor VTEM specifically. Fixed wing surveys are also a thing and more common over ground that is relatively flat, choppers get used for ground hugging steep ground - the cost per line kilometre goes up by a factor. All the GA data (radiometrics, EM, magnetics, gravity, DTM's, etc) is available online or by request. Eg: https://www.ga.gov.au/about/projects/resources/geophysical-acquisition-and-processing/airborne-electromagnetics https://www.ga.gov.au/about/projects/resources/geophysical-a... describes a dataset and links to raw data sets.