Technology

58964 readers

3847 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

[email protected]

405

Mullvad's public encrypted DNS Servers run in RAM now (ghacks.net)

submitted 11 months ago by [email protected] to c/[email protected]

38 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 82 points 11 months ago (6 children)

The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from a position where it is to a position where it isn't, and arriving at a position where it wasn't, it now is. Consequently, the position where it is, is now the position that it wasn't, and it follows that the position that it was, is now the position that it isn't.

In the event that the position that it is in is not the position that it wasn't, the system has acquired a variation, the variation being the difference between where the missile is, and where it wasn't. If variation is considered to be a significant factor, it too may be corrected by the GEA. However, the missile must also know where it was.

The missile guidance computer scenario works as follows. Because a variation has modified some of the information the missile has obtained, it is not sure just where it is. However, it is sure where it isn't, within reason, and it knows where it was. It now subtracts where it should be from where it wasn't, or vice-versa, and by differentiating this from the algebraic sum of where it shouldn't be, and where it was, it is able to obtain the deviation and its variation, which is called error.

[–] [email protected] 19 points 11 months ago (1 children)

I need an adult.

[–] [email protected] 1 points 11 months ago

Why won't you join the "Handsome Club" with me, just now?

[–] [email protected] 16 points 11 months ago

Sounds like Douglas Adams

[–] [email protected] 15 points 11 months ago

The missile maintains constant awareness of its location. This is achieved through its intrinsic understanding of where it is not. By calculating the difference between its current position and where it isn't, either by subtracting its current location from where it isn't or vice versa, the missile computes a deviation. This deviation is then utilized by the guidance subsystem, which is programmed to issue corrective commands. These commands are designed to reposition the missile from its current location to a desired one. As the missile reaches a location where it previously wasn't, it updates its current position. This means that the missile's present location is now where it used to be absent. Consequently, the position that the missile occupied before is now a location where it is not.

In situations where the missile finds itself in a position other than where it intended to be, the system identifies a discrepancy. This discrepancy is quantified as the difference between the missile's current and intended positions. When this variation is significant, it can be adjusted by the Guidance Electronic Assembly (GEA). However, for the GEA to make effective corrections, the missile must have knowledge of its previous position. This historical data assists in accurate recalibration, ensuring the missile's course remains true to its intended trajectory.

The missile guidance computer operates on a complex principle. When a variation alters the information regarding the missile's position, uncertainty arises about its exact location. However, the system is fairly certain about where it is not and remembers where it was. It computes its current position by subtracting where it should be from where it was not, or the other way around. This calculation is refined by contrasting it with a composite of where it should not be and where it was. Through this process, the missile identifies both the deviation from its intended path and the extent of this deviation, known as the error. This error calculation is critical for realigning the missile's trajectory toward its intended target, ensuring high precision in navigation and impact.

[–] [email protected] 7 points 11 months ago (1 children)

What the heck just happened?

[–] [email protected] 6 points 11 months ago

What happened is what is subtracted from was divided by what could have been. If you know the integral of what could have bin then you can obtain the euclidean distance to what is and then you know what happened.

[–] [email protected] 4 points 11 months ago

Those certainly are words.

[–] [email protected] 1 points 11 months ago (1 children)

Catch-22 or Gravity's Rainbow, if my memory of books I've read once is still accurate.

[–] [email protected] 5 points 11 months ago

Neither, its a copypasta born from a usaf pdf. I think it might actually be the og version, vintage af.