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"Those projectiles use GPS and inertial guidance to improve the gun’s accuracy to a 50 meter (164 feet) circle of probable error—meaning that half of its GPS-guided shells will fall within that distance from the target. But take away the fancy GPS shells, and the AGS and its digital fire control system are no more accurate than mechanical analog technology that is nearly a century old."
Thank you Captain Obvious...
Next thing you'll tell me is if you take away the fancy explosive inside a shell, it'll be nothing more than a bullet shaped piece of metal.
In a nutshell here is the difference between analog and digital:
The analog computers found aboard the older ships generate a Firing solution on a smooth axis of symetry or "arc".
Digital computers that generate a Firing solution cannot produce the smooth arc. They require another computer contained within the loop to assist with its FC. Otherwise, to put it planely, they turn a smooth arc into a "stitched pattern" arc thus the lack of accuracy.
Accurate delivery of projectiles require a smooth arc as one knows that a projectile cannot traverse two seperate axis as in (X axis then a y axis) in flight as in one after the other. Thats why they are gps and guided now days.
Thats why those computers are so remarkable and digital computers could never be affixed to those guns without blowing the budgets sky high so to speak.
If you launch a projectile far enough and high enough, you fly it within its target range via gps with the new systems.
The Iowas did it far differently, much more calculation since you could not "fly" it onto target. Either it was on, or it was off by whatever margin.
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