136
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 30 Apr 2024
136 points (96.6% liked)
NonCredibleDefense
6451 readers
1028 users here now
A community for your defence shitposting needs
Rules
1. Be nice
Do not make personal attacks against each other, call for violence against anyone, or intentionally antagonize people in the comment sections.
2. Explain incorrect defense articles and takes
If you want to post a non-credible take, it must be from a "credible" source (news article, politician, or military leader) and must have a comment laying out exactly why it's non-credible. Random twitter and YouTube comments belong in the Low Hanging Fruit thread.
3. Content must be relevant
Posts must be about military hardware or international security/defense. This is not the page to fawn over Youtube personalities, simp over political leaders, or discuss other areas of international policy.
4. No racism / hatespeech
No slurs. No advocating for the killing of people or insulting them based on physical, religious, or ideological traits.
5. No politics
We don't care if you're Republican, Democrat, Socialist, Stalinist, Baathist, or some other hot mess. Leave it at the door. This applies to comments as well.
6. No seriousposting
We don't want your uncut war footage, fundraisers, credible news articles, or other such things. The world is already serious enough as it is.
7. No classified material
Classified information is off limits regardless of how "open source" and "easy to find" it is.
8. Source artwork
If you use somebody's art in your post or as your post, the OP must provide a direct link to the art's source in the comment section, or a good reason why this was not possible (such as the artist deleting their account). The source should be a place that the artist themselves uploaded the art. A booru is not a source. A watermark is not a source.
9. No low-effort posts
No egregiously low effort posts. These include Social media screenshots with a title punchline / no punchline, recent (after the start of the Ukraine War) reposts, simple reaction & template memes, and images with the punchline in the title. Put these in weekly Low effort thread instead.
10. Don't get us banned
No brigading or harassing other communities. Do not post memes with a "haha people that I hate died… haha" punchline or violating the sh.itjust.works rules (below). This includes content illegal in Canada.
Join our Matrix chatroom
Other communities you may be interested in
Banner made by u/Fertility18
founded 1 year ago
MODERATORS
source for the information in the title: i made it up, or did i?
The sensor is just a 128x96 monochrome camera and it's fairly trivial to programmatically determine where IR lights are at in the frame. The processor just needs to scan through 12,288 pixels, find the center of a cluster of bright pixels and return coordinate. It's not a complex operation, but the devil is in the details: I suspect you would still need to overclock the hell out of it to process over 60fps. Manpads are fast with the Stinger clocking in at about mach 2. As the missile gets closer to the target, it wouldn't take much of a delay to screw things up.
So sure, if you spend the cash on a quality glass, you could do a ton with that sensor. It's probably years ahead of what was on the original Stinger, actually.
It might work, but the use-cases are extremely far apart here.
Also the accelerometer only goes to some 3.4 G which you get really easily.
I had a whole paragraph about that, but deleted it. The question focused on the IR sensor and processor so that put many other components out of scope.
Consumer grade MEMS sensors would probably just implode at those forces, but I can't really speak to that.
Edit: While I was thinking more about this, it makes complete sense that any circuits would be analog, especially for that time period. With military hardware, durability and reliability is paramount**, so a stinger probably would use something way less complicated than a camera. I don't know for certain, but that is most of the magic of military tech in general.
** lol. I actually said that. Replace "reliability" with "survivability" and that sounds cooler.
IR homing sensors before the digital age where a piece of analog signalpath art. Its mostly rotating a singular ir sensor in 45degree and then mapping the inputs rotation compensated to the control surfaces. Simple at core but cant tell the difference between a jet exhaust, the sun, or a flare.
Modern version are boring is a High resolution ir cam and some blackmagic AI picking targets apart from flares.
3.4 G.
Not great. Not terrible.