Ukraine is Using Sonar to Track Drones 

Locating aircraft position by sound was heavyly used in WW2 to track bomber formations by night. It was mostly replaced by radar later. The US Army used a sonic stealth aircraft Lockheed YO-3 Quiet Star during the Vietnam war.

"Sonic stealth" .. reminds me of WWII "night witches" on Po-2 biplanes, gliding in bombing run with stopped engines. Next steps after sonic stealth might be also sonic camouflage (eg. under faked sound signatures of drones used by foe) or deafening sonic sensors prior mass attack :)

maybe sonic stealth can be used for moment of silence for those who died to save black rock and cargil

The British built a system of sound ranging listening dishes along their southern coast before the Chain Home Radar was installed just before WWII.

The chopper the Americans used for the raid to kill Bin Laden was already using some sonic stealth technology, judging from the recovered tail rotor.

I read somewhere that a variant of the Russian Lancet drone has microphones for automatic tank engine classification while loitering

Taking the submarine sonar technology to the above ground drone surveillance is really remarkable adaption.

The PLA's autogyro corps pretty much implement that. Autogyros' main rotor are unpowered, they work by auto-rotation (hence the name). So during approach the corps turn off the tail propeller and approach the target in complete silence, the autogyro remains airbone thanks to the auto-rotation principle acting on the main rotor.

The high tech version of the WW2 British sound detectors used to track Luftwaffe attacks during the Battle of Britain

What about "1B75 Penicillin"? The acoustic-thermal artillery-reconnaissance system. Arguably, there is acoustic stealth with the Abrams and T-80 due to gas turbine engine.

History repeats itself. WW I and even into WW II attempted to use sound to detect incoming aircraft.

So … sound location of aircraft has become viable again, 90 odd years down the track. Thank you for this video.

Not only can you determine the model of drone from the sound. But with some work, and taking environmentals into account, you could also determine if it was carrying, and of what weight, a payload..

First, I have no first hand knowledge of what they are using. But, if I were to do it I would take hundreds of old cell phones with small solar panels, set up a mesh network along the border. Local processing to pick up possible signatures, relay them back to CNC. With one hit you get possible entry. Two or three hits would give you most likely position, time, speed and bearing to feed into a defense system. Use a mesh network so that when nodes get taken out it self heals. Probably need the cells to send a periodic "I am alive" to see where the network needs to be repaired. Countermeasures: don't fly the drones in a straight line. Most mesh networks have zero security so you can start flooding them with false signals. Even those that do, you pick up a node and download the key.

Russia is starting to field Electronic warfare kits on their tanks and even some on infantry soldiers to block signals going to the drones operated by the AFU.

Squarehead has been doing this commercially for years. Note that changing the props or tweaking exhaust pipes can modify the signature.

Thanks for sharing this article, sir.

I would think an acoustic system can be used to cue a radar/anti-drone system when to turn on and target the drone.

I remember a few years ago seeing a report in the US, where cop cars were fitted with multiple microphones to detect and triangulate the sound of gunshots. 4 x microphones spread out in a star pattern basically that measures the time at which each microphone hears the sound. I'm pretty sure the same could be used not just on listening posts on the ground but also in the air as well. All the drone would need to do is momentarily turn off its engine and glide (slowly) to triangulate the position of other drones, and then turn its engines back on. Keep doing that at various spots and get a sense of what's in the vicinity. At the very least it could provide an early warning of impending drone attacks.

In US cities they have gunshot sound detectors. This wouldn’t be too different to change.

attenuating or even suppressing some noises is technically possible with the technology of the 2000s. Being a "mechanical" vibration, the sound can be suppressed by emitting a sound of the same frequency and intensity in the opposite phase. The noise of the engine, in turn, is a relatively stable acoustic signal, so a simple electronic device can generate a signal in counterphase with the noise, and then it is only necessary to emit the signal at the correct intensity. It remains to be seen if the weight of the equipment somehow reduces the useful load of the drone to an extent that makes the solution useless. In small drones there will not be, but in heavy ones where a 10 kg equipment is not big lose, noise suppression systems will appear.

Against slow and noisy Shahed drones sure... but the faster the prey gets the less and less useful the sound signature methods will be. Still interesting within certain limitations.

U have sound spectral analysis of the shelf solutions considering quadcopters... very narrow spectral signature, but the problem for detection are not aircraft, but many drones have noise supression.

Track drones with sound. That's goes back to before WW2.

Tired: Radar. Wired: Air Sonar

Always interesting. Thank you.

While this may be practical for imidiate warning before an imminent attack, the possibility of this becoming an anti drone awacs network is remote... the detection range will be very limited and saying that just some meteorological data has to be added, is extreem simplification! So next to every microphone there will be a whole meteo station? And I didnt even mention all the other accustic disturbances that can mask these buggers.

DJI Rules the BattleField

The Brits detected aircraft using sound before the invention of Radar.

The prop driven shaheed and similar craft are primary targets of the sound detect syste. Very small UAS are better detected by radio emissions, height is generally sub 400ft, and tend to be close to front lines where good sound detection is often too complicated to enact. Shaheed and like uas will tend to above that in many parts of their trajectory and often navigate automomously, so sound is ideal for detection, plus tend to be slow moving relative to their audible detection range

Artillery shells and vacuum bombs can disrupt sound sensors.

I think one of the overlooked tactics to deal with drones, is the possibility of drone on drone vioIence.

"Sounds" like an above ground version of SOSUS

Man I was thinking to use sound. In ww1 the British used massive concrete walls to capture sound and direct it at microphone. It was basically early warning radar. They could tell what direction they were coming from and the elevation they were flying at.

no.. with arty it is simple the same explosion sound can be picked up no direction needed two distances crossect but with drone the sound direction is needed because the sound is continous.. no way to utilise doppler as there are at least 4 propellers interacting

electric fixed wing craft already is sound stealthy also infra red stealthy.

1:03 the lower left hand text is interesting.

Always good content...thanks

I've worked on fairly small microphone "array antennae" some time ago, and more current DSP and small microcontrollers, plus smaller and more sensitive digital microphones, should make quite small array systems feasible.... I imagine that there are some pretty good programmers in Ukraine, and good microphones, with deep SNR...

Thanks!

This can easily be defeated via a small speaker on the drone to mask/alter their sounds.

If sound stealth is the next big thing …… the F-35 is at a VERY BIG disadvantage! This machine is LOUD! I didn’t believe it until I had the chance to witness it on my own……now on an almost daily basis 😂 …. thanks to the AIR NATIONAL GUARD 😅😂

Wondered if they would be doing this for counterbattery.

Why so complicated - use Mugin 5/6000 as a base platform and add whatever you need - like FMCW radar. It's going to be the same "life cycle" as we have experienced since WW2 with real airplanes. Next big step is, drone interceptor with radar which can kill other drones.

Grazie.

So, Russia did a big "marketing" for their passive acousting artillery detectors, too. So, it is usefull to know where the drone CAME. There is the operator, who just won a 152/155 mm salvo.

Props for changing the thumbnail 3 times

They used sound to pinpoint artillery in ww1

The polish anti drone system SKYcrtl use a mix of radar, optic and microphones, to detect drone, and determine his position. A hammer can be associated.

Actually I doubt they'd use Starlink, at least not directly for each node. But it sounds like a really interesting task. A Mic, a computer, a comm module and a battery, maybe a solar module as well - that's what you need per mic node. Not sure what sort of computation would need to be done, but I assume a Raspberry Pi should be potent enough to do the edge-computing part. Once these nodes have done some state-independent and maybe state-dependent filtering and calculation, there shouldn't be much communication volume left to do. More importantly, you'd want to update your software over the air. The bill of material for one such node could be $250ish, $500 max. If you want 1s of sound travel max, you'd need 9 such nodes within each square km. Conservatively assuming a 10km range for LoRa - thats 169 Mic-cells per Starlink-node, make that $15 added cost per Mic node. $5000 per sqm doesn't sound terrible by military spending standards. Let's say 5km by 100Km coverage cost $550*500 = $275K, ok - let's say $500K to deploy. How much does a single Stinger missile cost?

Think it was ww1 Britain built special reflection walls and microphones as an early warning messure

Sonar in air?

well, the US army tested a sound-cancellation system on a tank, it worked. so theres no reason you couldn't make one for a drone

Every,who lives near an airport knows that;)

The is how you find f35 its loud af

Se viene una lluvia de drones después del EMP de Rusia

You need to read Rusis paper on LAWS, to have a complete picture, just a recomendation.

WW2 technology, before radar.

No game changer ,losting the war will still lost.

More videos

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here is a detailed video of the system you are probably talking about: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pYS3hrKfVKU.html No English subtitles sadly but i'm sure you can find some software that can generate them. It is primarily used to identify Shaheds and (maybe) cruise missiles. Shaheds are slow and really loud. It is not used however against quadcopters and FPVs. I flew a dji mavic and it is really silent: you fly it 10 meters away and you practically can't hear or see it. That's why on many grenade drop video enemy soldiers seem to be unaware of danger they are in. You can have a quadcopter hover directly above your head and have no clue it's there

So you identify a drone... now what? It is usually suicide drone. It is one way. Maybe this is to be used against larger multi use surveillance drones - sort of like cheap passive sensor similar to heat. But even if you do this - now what? You need to have a much better fine tuning for fire solution. This seems to be a good "warning" system but not a lot more than that - you cannot guide a missile AFAIK to a drone using its sound alone.

Repelent 1 anti drone system

Interesting, yes. Genius? Hardly.

I think the Russian anti drone shield is better tech. The ukrainian system sounds like Vietnam war tech for monitoring Ho Chi trail

Russia is producing drones at industrial levels and this is mostly PR from ukraine.

:)

What's with the constant support for Ukraine??? Have you still haven't understood what the Minsk accords were for? Reap what you sew

From Mexico we support you Russia...we latinos are already the majority in the US ... South West..USA. And we question why Biden cares more about Ukraine then America..to us America is falling..and Godless..we will keep coming stay fuerte Ruski

Your previous vid showed the failure of large expensive drones in Ukraine, but crowed about even larger, more expensive drone projects. Instead of cheap, rapidly replaced drones, Westerners work on the opposite. Now we look forward to detection systems too expensive to cover a concert, and drones that cost 10 times more, because they have a muffler.

Far from it, Ukraine had already lost.

Promo-SM

Sounds like BS. Drones aren't audible passed a dew dozen meters

Sound detection? Give me a break! Bullshit propaganda!