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Date: Sat, 03 Jul 2010 08:16:35 -0500
From: "Marc A. Criley" <mcNOSPAM@mckae.com>
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Subject: Re: ADA made me hate programming
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Date: 2010-07-03T08:16:35-05:00
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On 07/02/2010 08:54 PM, anon@att.net wrote:

>
> I knew what you meant by "IP". But:
>
>      1. Once a missle is launched the any wired "IP" is no long a valid
>         port.
>      2. Wireless IP is no good, do to hacking during flight. Do not want
>         a hacker forcing a 180 degree turn or having that missle just
>         land so they can use it against someone else. Do you?
>
> Which means that the system must be able to operate without human
> connection except for the system kill switch after launch. So, besides
> the radio port for the "Kill" command, the missle has to be disabled
> any and all humand connection, that include any and all IP subsystems.
> So, it must rely on the radio GPS system to calculate the position of
> itself and the target.

Wrong.

As in "you are obviously completely unfamiliar with the field" wrong.

Several active, deployed missile systems (such as the 
Patriot--http://www.army-technology.com/projects/patriot) utilize 
"IFTUs" (In-Flight Target Updates) for mid-course correction of the 
missile's trajectory towards its intended target. These updates are 
"radioed" to the missile from a ground station with up-to-date target 
information. The missile's seeker then guides the missile in for the 
final kill.

There are other (cruise) missile systems such as the Tactical Tomahawk 
(http://en.wikipedia.org/wiki/BGM-109_Tomahawk#Tactical_Tomahawk) that 
loiter in an area of interest and then use in-flight retargeting for 
final targeting.

Obviously the command links are well-encrypted to prevent hostiles from 
usurping control.

Marc "Yes, by day I have been known to do rocket science" Criley