Re: ADA made me hate programming

[anon@att.net]

In <e411d$4c2f383f$433a4efa$4211@API-DIGITAL.COM>, "Marc A. Criley" <mcNOSPAM@mckae.com> writes:
>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

The mid-course correction type of systems is outdated, and has been reported 
that it has been hacked.  What the gov't wants a smart "AI" brain for its 
missiles, but the public reject this type of weapon.  Plus there is no 
encryption that is perfect, only the amount of time a hacker needed to crack 
it and that's is the true security, aka "Time".

But what we we talking about was the use of IP.  And at the movements 
most embedded processors have built in serial port and some even come 
will parallel port, so why add extra layer of hardware and software with 
their problems when it is not needed. In simplistic terms just add a digital 
radio receiver and your good to go.