bright
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bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
3·7 days agoYour confused about what I’m saying. The ARRAY OF RADAR STATIONS is emitters. I’m saying THE ATTACKERS AGAINST the array of radar stations only need to be passive detectors.
bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
1·7 days agoThat’s the topic of the thread your replying in. Quote:
you could theoretically make a moderately large distributed array sprinkled over a few square kilometers
bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
31·7 days agoYour information about passive radar detection is not up to date. There are tons of passive detection of radar systems that by design do zero emission. The radar array stations will need to emit in order to function, but the enemy can find those radar emitters without emitting any energy of their own
bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
1·7 days agoI’m not understanding. Let’s say army A has a radar array of 500 relatively cheap radar stations. They clump them all into a 1 square km area. So now army Z drives some howitzers nearby (which aren’t detectable by ground based radar), waits till a radar station turns on, the passively locates the radar base station, and shoots a cheap shell at it which destroys it.
But if you say army A has the level of military equipment that can locate and destroy howitzers up to 30 km away in all directions, then what benefit does an array of concentrated radar stations provide?
bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
2·7 days agoLocating radar emissions is a passive process, it doesn’t reveal your own location. That’s why i said the radar array would have to have very strong defenses extending out 30 km in all 360 degree directions from each individual radar station. And if a group has that strong a level of military equipment already then i don’t see why they would need this huge redundant array of radar stations all concentrated in a small area.
bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
6·7 days agoLocating the radar base station? No that’s the easiest part. Radar is like turning on a Hollywood style searchlight pointing up into the sky. The instant you turn it on its extremely obvious where the radar searchlight is coming from
bright@piefed.socialto
Technology@lemmy.world•Engineer open-sources DIY radar system that's 95% cheaper than $250,000 commercial offerings, has 20 kilometer range — Moroccan engineer designs Aeris-10 radar, shares it on GitHubEnglish
7·7 days agoUnless I’m missing something in your plan i don’t think that would work well. If these radar stations aren’t surrounded by very serious defensive systems for hundreds of miles in every direction, then they’ll simply be blown up by dumb howitzer shells that only cost around 2000 dollars.
Howitzers are cheap, relatively long range, mobile, and accurate enough. If you don’t have strong enough defenses to prevent the howitzers from moving into range, then they’ll just blow up all your radar stations with cheap shells.
Holy shit you have to be kidding me.
Zip? What year is this?
bright@piefed.socialto
Showerthoughts@lemmy.world•Your thoughts are so powerful that if you imagine eating a lemon, your mouth will start salivating in preparationEnglish
2·7 days agoOh wow, aside from the slight misunderstanding of that single word, your english is flawless. I had no idea you weren’t a native english speaker. You should be proud!
And thanks for clarifying
bright@piefed.socialto
Showerthoughts@lemmy.world•Your thoughts are so powerful that if you imagine eating a lemon, your mouth will start salivating in preparationEnglish
1·8 days agoMost people primarily use the printed image on the pieces to look through the pile to find the correct adjacent piece of the image, and then secondarily use the shape of the piece to find the exact right spot.
For example let’s say the puzzle’s picture is a photo of a car. And say currently I’m working on a red tail light. So I’ll sort through the pile looking for pieces that are red with a plasticy-looking texture. Then after i found one I’ll look for smaller image details to find the general area within the tail light around where the piece should go. And only then do i start looking at the shape of the pieces to see where the roundy out and in bits would fit into each other.
Is that not what you do?
bright@piefed.socialto
Showerthoughts@lemmy.world•Your thoughts are so powerful that if you imagine eating a lemon, your mouth will start salivating in preparationEnglish
1·8 days agoHow are you at doing jigsaw puzzles? The person i know is incapable of doing them
bright@piefed.socialto
Technology@lemmy.world•10 petabytes of sensitive data stolen from China's National Supercomputing Center, hackers claim — daring heist would be largest ever China hack, covering 6,000 clients across science, defense, and beEnglish
17·8 days agoA petabyte is 1000 terabytes. There are commercial hard drives that are over 30 tb. So 33 of these drives hold 1 pb. Times ten makes 330 hard drives to hold 10 pb. All of those drives together would take up just one third of a single full height server rack like this.
https://www.quantumtechnologyequipment.net/products/s6llst3137
So not only wouldn’t it need a whole data center, in fact it wouldn’t even need a whole server room, and actually wouldn’t even need a whole server closet!
I calculated this all out only because I’m procrastinating😆
bright@piefed.socialto
Showerthoughts@lemmy.world•Your thoughts are so powerful that if you imagine eating a lemon, your mouth will start salivating in preparationEnglish
2·11 days agoYup, they basically can’t imagine any sensation. Not sight, not sound, nothing. Yet they’re a capable and successful person. I have no idea what the experience is like in their head
bright@piefed.socialto
Showerthoughts@lemmy.world•Your thoughts are so powerful that if you imagine eating a lemon, your mouth will start salivating in preparationEnglish
7·12 days agoY’know how some people can’t visualize images in their head? I know someone that can’t imagine tasting things
Gen x: Hey I’m choking the chicken here!
bright@piefed.socialto
No Stupid Questions@lemmy.world•Why is 'Philippines' spelled with a PH, but 'Filipino' is spelled with an F?English
231·13 days agoHow did this question never occur to me before? Now i need to know the answer too
The experience reports i read about it are all bad to neutral. It doesn’t belong on the list of good drugs



The company recently changed the 5 minute required wait down to 3 minutes.