Every object absorbs and releases heat at a different rate so the software behind a thermal camera can be adjusted to identify those objects.
Blows me away. Peace talks???. Russia invaded a sovereign country. The end of war talks should include reparations to the country that was invaded.
Of course Russia won’t and can’t do it. There own economy is a shambles.
Peace Talks?
If my neighbor killed my family and destroyed my property, there are not going to be any ‘Peace Talks’
Well, I mean, eventually there will be. It’s just a question of what the terms will be. Logically, the only possibilities are that one side completely destroys and conquers to the other, to the point that the losing nation no longer exists; that the war goes on forever; or the two nations engage in talks to end the war. Going on forever isn’t really possible, Russia is unable to completely conquer Ukraine, and Ukraine isn’t interested in completely conquering Russia. Ergo, peace talks.
Can we call the talks “Stop this illegal invasion you fucking Russian shitheads talks”
Sounds more accurate than “peace talks”
Thank you. Peace talks sound like a disagreement. This ain’t a disagreement.
And Putin is talking to NK. What a mess. China sits on the side lines laughing ready to pick up the pieces.
Of course it is. Ukraine and Russia disagree on whether Ukraine should continue to exist as an independent country.
There will be peace talks eventually. Just as there was with North Korea after it invaded the south. There is no point on getting hung up on semantics. Negotiations on terms to end the war will happen, even if one side functionally surrenders. There’s a reason Hirohito remained as emperor after WW II.
Presupposing the sensor hardware has sufficient spatial and temperature difference resolution above the noise floor to detect any signal at all.
Modern digital signal processing is near magic, but even it can’t pull useful data out of silence or pure noise.
Wouldn’t the metal of a mine have a different heat signature than frozen earth, even when cold? Wouldn’t it be the differential in heat signature that is important, even at lower temperatures?
There’s also a very large question as to whether Russia will keep any terms they agree to for any longer than it takes them to re-arm. Ukraine absolutely cannot trust them to do so.
Possibly some other country/ies can be gotten to keep the borders. Though I don’t expect Russia would be eager to agree to that.
While I acknowledge this is true, it could very well turn out to be another Korean War, which never had an actual ending other than a ceasefire. And even an agreement to a ceasefire I can see not actually taking place for years, if not a decade or more. It will more likely end when Russia pulls out completely exhausted and Ukraine has no reason to attack anything in Russia because it’s not threatening them, or Russia conquers Ukraine. The way things have gone those seem much more likely to happen than negotiations to end the war, if only because no one will trust Russia to abide by its terms if it gets anything it wants.
Just look at what a FLIR system does in a plane. you can see through fog or late day sun haze.
Semi educated guess here. The mines are buried and are in thermal equilibrium with the earth.
But there still would be heat from the Sun during the day, although lower than in the summer, so wouldn’t absorption and cooling rates for metal and earth still be be different?
After all, the mines are in the earth in the summer and apparently can be detected by their heat signatures, so not at thermal equilibrium then.
Snow pack could affect it in winter, though, since it has an insulating effect.
Interesting issue but I don’t want to hijack so will stop.
Random thought on the drive home today: Does Ukraine have anything like Wild Weasel?
The faces of soldiers after intense combat (below, War in Afghanistan):
The same look on Ukrainian soldiers returning from the front line:
If they were able to expel the Russians from their territory entirely, they’d presumably apply to join NATO the next day (I believe territorial integrity is a condition of membership). Russia ain’t going to attack a NATO country now.
Absolutely. If they were sitting on top of the ground in the sun during the day, they would be a different temperature for most of the 24 hour day. I think these are underground and therefore well insulated which would mean a very similar temperature for most of the time. My physics could be wrong though and there also may be more complicated sensing than just raw temperature
Not really. As a Soviet successor state SEAD was never a priority, because Western militaries don’t build out SAM defenses like the Soviets did. Ukraine did at one time have some old Soviet Kh-58 anti-radiation missiles and they have managed to jury-rig U.S.-supplied AGM-88 HARM missiles to fire from their MiG-29s.
But just having anti-radiation missiles is a long way from a dedicated anti-radiation platform like Wild Weasel.
The mines are most apparent at dawn and dusk which makes sense. I would expect the SNR to correlate to the range in the daily low/high of the ground temperatures. A quick look shows that the range in low/high of air temperatures is about double in the summer than the winter. If there is no snow, a range of 10 C might be enough.
But as several have mentioned snow is a great insulator. Depending on the depth, density, and moisture it might be enough to make detection unreliable. Especially since false-negatives are life-threatening.
On the other hand, FLIR cameras have a sensitivity measured in milli-Kelvins (mK) and they have better SNR when the imager is cool.
Now as to whether that vote would pass is another question. Right after the invasion? Very likely. No? Possibly not.
More on topic: thousands of Ukrainian children from occupied areas have arrived in Belarus. While I’m glad they’re hopefully out of any direct conflict, taking kids is a shameful act. Olena Zelenska Is trying to get them back. Ukraine calls for return of ‘abducted’ children as more arrive in Belarus | Russia-Ukraine war News | Al Jazeera