[time-nuts] "The GPS navigation is the weakest point,"

bg at lysator.liu.se bg at lysator.liu.se
Thu Dec 15 20:15:55 EST 2011


Having a +20m wingspan, getting very decent inertial sensors is no
problem. ca 6kg on a 5000kg(?) vehicle is no problem.

    http://www.es.northropgrumman.com/solutions/ln251-digital-ins-gps/assets/ln251.pdf

--

    Björn




> The problem I have seen with the light weight electronic inertial
> guidance sensors is they drift off course very quickly.  You would need
> to be able to correct them several times per minute...  Good enough to
> keep a plane flying straight and level, and in the general direction of
> target, but not good enough to hit the target...
>
> -Chuck Harris
>
> lists at lazygranch.com wrote:
>> It depends on if they use the civilian or military GPS signal. Spoofing
>> the
>> military signal should be tough.
>>
>> Inertial guidances isn't all that heavy these days. Laser ring gyros for
>> instance
>> or perhaps MEMs could be used.
>>
>>
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