Ukraine War Thread Part 2
Tabs please !
Former physicist hat on....
For IR "cloaking", the best strategy is to radiate at the same level as the background. If you radiate less then you will appear as a cold spot i.e. you can be detected. There was an interesting demonstration of hiding a tank on the top of a ridge by covering it in lightbulbs. The bulbs were illuminated to the same radiance as the background sky and hey presto, it became very difficult to see by eye from a distance.
Hat off again.
For IR "cloaking", the best strategy is to radiate at the same level as the background. If you radiate less then you will appear as a cold spot i.e. you can be detected. There was an interesting demonstration of hiding a tank on the top of a ridge by covering it in lightbulbs. The bulbs were illuminated to the same radiance as the background sky and hey presto, it became very difficult to see by eye from a distance.
Hat off again.
Former physicist hat on....
For IR "cloaking", the best strategy is to radiate at the same level as the background. If you radiate less then you will appear as a cold spot i.e. you can be detected. There was an interesting demonstration of hiding a tank on the top of a ridge by covering it in lightbulbs. The bulbs were illuminated to the same radiance as the background sky and hey presto, it became very difficult to see by eye from a distance.
Hat off again.
For IR "cloaking", the best strategy is to radiate at the same level as the background. If you radiate less then you will appear as a cold spot i.e. you can be detected. There was an interesting demonstration of hiding a tank on the top of a ridge by covering it in lightbulbs. The bulbs were illuminated to the same radiance as the background sky and hey presto, it became very difficult to see by eye from a distance.
Hat off again.
Mog
Last edited by Mogwi; 22nd Jan 2024 at 10:13.
Thermal imaging is long wave IR, near infrared is short wave. Near infrared protection can be built into fabrics, but does not protect from long wave thermal imaging.
The video in question is undoubtedly long wave thermal imaging and they are just waving something that has the same temperature as the surrounding area in front of the person.
I've tested this in person with a camping mattress, you can hide yourself from thermal imaging with it in freezing temperatures, but you lit up like a torch in NIR imaging due to the mattresses material properties.
At the same time, wihtout the mattress, you are not very detectable in NIR imaging if wearing NIR compliant clothes and gear. However, if any of your gear/clothes is not NIR compliant, it gives you away.
Discrimination of a target is by detecting a signal from noise, and if the signal supression is substantial, then an artefact arises that is detectable, and that is actually observable in the images that are shown here. Now, edge detecting software is readily available, and has been for years, and so detecting any differential from the noise is possible, either as a positive or negative signal. Do a hi res screen shot of the video, and import into a $2 image processing software package, and do find edge.
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
Only in the Russian Army, I feel for the poor Sentry doing his job.
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
Ukraine has been hitting substations in the occupied territories
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
Fascinating film of the attack on the LPG tanks at St Petersberg as it happened, and the desperate attempts by the Russians to remove the docked or docking tankers away from the blaze and attack.
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
A drone helps a wounded Ukrainian soldier to safety. Get well soon...
The following users liked this post:
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
Russian Naval Aviation Supporting their Ops? Kuznetzov still in the Yards
Warning: Aviation Content
https://www.forbes.com/sites/davidax...h=2dee307a10ca
They ended up shore-basing the MiGs for the remainder of their operation.
https://www.forbes.com/sites/davidax...h=2dee307a10ca
Originally Posted by the article at the link
...Kuznetsov has been in overhaul since 2017. The 58,000-ton, 1980s-vintage flattop may never return to front-line service, effectively stranding her twin-engine, supersonic MiGs. The navy may have found another use for some of the 22 or so surviving MiG-29KRs out of 24 the fleet acquired starting in 2013: according to the Ukrainian Center for Defense Strategies, it has deployed them to Crimea. From there, they reportedly hunt Ukrainian navy boats.... ...last fall, at least two MiG-29KRs belonging to the 100th Independent Shipborne Fighter Aviation Regiment were flying from Saky air base in Russian-occupied Crimea. The medium-weight MiGs reportedly have flown alongside Russian navy Sukhoi Su-30SM heavy fighters on patrols looking for Ukrainian navy boats plying the western Black Sea.
After scuttling the frigate Hetman Sahaydachniy, the Ukrainian navy no longer has any large armed warships. What it does have is a lot of missiles, airborne and seaborne drones and fast small boats.
Crewed boats transport Ukrainian commandos on raids into Russian-held territory. Robotic boats, packed with explosives, infiltrate ports to strike Russian warships.
Supersonic fighter versus small boat might seem like an unfair fight, but Ukrainian boat crews often pack shoulder-fired surface-to-air missiles. In August, a Ukrainian crew scored a hit on a Russian Sukhoi fighter, apparently damaging it and forcing it to return to base.
While the Kremlin optimistically projects the carrier could return to the fleet this year, it’s possible the overhaul could extend into 2025... The last time Kuznetsov deployed, off the coast of Syria ... 2016... her air wing lost a MiG-29 and an Su-33 to faulty arresting gear.
After scuttling the frigate Hetman Sahaydachniy, the Ukrainian navy no longer has any large armed warships. What it does have is a lot of missiles, airborne and seaborne drones and fast small boats.
Crewed boats transport Ukrainian commandos on raids into Russian-held territory. Robotic boats, packed with explosives, infiltrate ports to strike Russian warships.
Supersonic fighter versus small boat might seem like an unfair fight, but Ukrainian boat crews often pack shoulder-fired surface-to-air missiles. In August, a Ukrainian crew scored a hit on a Russian Sukhoi fighter, apparently damaging it and forcing it to return to base.
While the Kremlin optimistically projects the carrier could return to the fleet this year, it’s possible the overhaul could extend into 2025... The last time Kuznetsov deployed, off the coast of Syria ... 2016... her air wing lost a MiG-29 and an Su-33 to faulty arresting gear.
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
The commander of the IL-22M that was hit, was killed and the wounded co-pilot managed to land it according to Russian sources.
The following users liked this post:
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
Possible Russian false flag exercise in Donetsk
Thread Starter
Join Date: Feb 2006
Location: Hanging off the end of a thread
Posts: 33,170
Received 3,037 Likes
on
1,281 Posts
Back to IR - the radiation signature of a body is a combination of what it emits, what it reflects and what is transmitted through it - hence a material that masks emission may itself reflect differently to the background and still show up to a suitable sensor.
If memory serves, IR sensors are optimised for specific bands of IR, not a broad brush of all IR bands.
If memory serves, IR sensors are optimised for specific bands of IR, not a broad brush of all IR bands.
North Korean Missiles: fired at Ukraine? Yes, say analysts
----------------------------------------------------------------------------------------------------------------------------------------------------------
In the category of Ballistic Missile Attacks vs Ballistic Missile Defense (Russia/Ukraine version) (sub titie: Mr Kim gets to do an Op Eval in Ukraine).
https://www.bloomberg.com/news/artic...uverify%20wall
(Bolding and indents are mine, and some of the text was snipped as noise)
(Bloomberg) -- Burning through his stockpiles as the war in Ukraine nears the two-year mark, Russian President Vladimir Putin has turned to Kim to provide short-range ballistic missiles and more than 1 million rounds of artillery. The North Korean missiles sent so far are similar in size and flight dynamics to Russia’s Iskander series, weapons experts have said.
A report by the Center for Strategic and International Studies showed that the US Patriot air defense system has so far been largely effective in countering Russia’s missiles. In June, when Russia tried to take out a Patriot battery protecting Kyiv, the system shot down all of the 34 Iskander and Kinzhal missiles Russia fired, CSIS said. That’s a warning to Putin about the KN-23 and KN-24 missiles Kim is believed to be supplying. The systems are designed to be deployed quickly, maneuverable in flight and reliably hit targets with a degree of precision. That might not be enough.
“The Patriot missile defense system should be able to intercept North Korea’s short-range ballistic missiles, given its effectiveness against Russian Iskanders,” said Shaan Shaikh, a fellow in the Missile Defense Project at CSIS, a Washington-based think tank.
North Korea’s missiles are priced at about $5 million each, according to data compiled by the Korea Institute for Defense Analyses and released in 2022 by South Korean lawmaker Shin Won-sik, but the costs to Kim have likely dropped since then as he ramped up production.
The transfer of such missiles from North Korea, with ranges of about 400-800 kilometers (250-500 miles), increases the pool of weapons the Kremlin can draw upon to attack Ukraine as the war grinds on.
... Russia has used heavy barrages of missiles to overwhelm Ukraine’s defenses. In late December, Russia ramped up its bombardment campaign, firing hundreds of missiles at cities across Ukraine, killing dozens. The US determined Russia probably used North Korean missiles in that attack. The influx from North Korea will likely draw down the stocks of missiles for Patriot batteries and other air defense systems in Ukraine, in a strategy of attrition that could increase the changes for successful strikes.
As a result, NATO members pledged in January to ramp up production and procurement of 1,000 Patriot missiles to bolster Ukraine’s air defenses, at a cost of $5.5 billion.
“Patriot is the only system that can deal with all types of Russian missiles,” Ukrainian President Volodymyr Zelenskiy said in October when Germany pledged to provide a Patriot battery to protect Ukraine. Now he’ll see if that includes the newer North Korean varieties as well.
A report by the Center for Strategic and International Studies showed that the US Patriot air defense system has so far been largely effective in countering Russia’s missiles. In June, when Russia tried to take out a Patriot battery protecting Kyiv, the system shot down all of the 34 Iskander and Kinzhal missiles Russia fired, CSIS said. That’s a warning to Putin about the KN-23 and KN-24 missiles Kim is believed to be supplying. The systems are designed to be deployed quickly, maneuverable in flight and reliably hit targets with a degree of precision. That might not be enough.
“The Patriot missile defense system should be able to intercept North Korea’s short-range ballistic missiles, given its effectiveness against Russian Iskanders,” said Shaan Shaikh, a fellow in the Missile Defense Project at CSIS, a Washington-based think tank.
North Korea’s missiles are priced at about $5 million each, according to data compiled by the Korea Institute for Defense Analyses and released in 2022 by South Korean lawmaker Shin Won-sik, but the costs to Kim have likely dropped since then as he ramped up production.
The use of the North Korean missiles appears to be quite new, and data is likely sparse on their performance. Any information Kim can glean about his weaponry’s performance in real-world combat could also help his regime refine future designs and attack strategies.
“Russia’s use of DPRK ballistic missiles in Ukraine also provides valuable technical and military insights to the DPRK,” the US State Department said in a joint statement this month that included about 50 countries, referring to North Korea by its formal name.
Wreckage thought to be from North Korean missiles was in the debris from strikes in Kharkiv in early January, when it wasn’t likely under Patriot protection. Dmytro Chubenko, a spokesperson for the Kharkiv prosecutor’s office, told reporters the missiles were different in key aspects from Russian models, and he believed they were from North Korea, the Associated Press reported.“Russia’s use of DPRK ballistic missiles in Ukraine also provides valuable technical and military insights to the DPRK,” the US State Department said in a joint statement this month that included about 50 countries, referring to North Korea by its formal name.
The transfer of such missiles from North Korea, with ranges of about 400-800 kilometers (250-500 miles), increases the pool of weapons the Kremlin can draw upon to attack Ukraine as the war grinds on.
... Russia has used heavy barrages of missiles to overwhelm Ukraine’s defenses. In late December, Russia ramped up its bombardment campaign, firing hundreds of missiles at cities across Ukraine, killing dozens. The US determined Russia probably used North Korean missiles in that attack. The influx from North Korea will likely draw down the stocks of missiles for Patriot batteries and other air defense systems in Ukraine, in a strategy of attrition that could increase the changes for successful strikes.
As a result, NATO members pledged in January to ramp up production and procurement of 1,000 Patriot missiles to bolster Ukraine’s air defenses, at a cost of $5.5 billion.
“Patriot is the only system that can deal with all types of Russian missiles,” Ukrainian President Volodymyr Zelenskiy said in October when Germany pledged to provide a Patriot battery to protect Ukraine. Now he’ll see if that includes the newer North Korean varieties as well.
Last edited by Lonewolf_50; 22nd Jan 2024 at 15:32.
Only in the Russian Army, I feel for the poor Sentry doing his job.
https://twitter.com/wartranslated/st...55643683660181
https://twitter.com/wartranslated/st...55643683660181
Moral is if your a bully, and claim to be a Bn Cdr, you can get through any checkpoint. Some security,
Ecce Homo! Loquitur...
BREAKING:
Poland joins the G7 Security Guarantees for Ukraine after a meeting between President Zelensky and PM Tusk in Kyiv today.
Poland also agreed to provide financial support for Ukrainian arms purchases and to launch joint weapons production.
.
…
Poland joins the G7 Security Guarantees for Ukraine after a meeting between President Zelensky and PM Tusk in Kyiv today.
Poland also agreed to provide financial support for Ukrainian arms purchases and to launch joint weapons production.
.
…
Exactly. Expect the guard to say sod it and wave through the next bunch of Ukrainian special forces ready to throw Putin out of the nearest window.
The following users liked this post:
I hope.
The following users liked this post: