"Tarver Engineering" wrote...

As the rest of the thread up to this point indicates, there is a desire to
redirect a GPS guided munition post launch. The means to reprogram
the munition would require some data link.

Actually, data link is NOT a hard requirement. There have been several
initiatives in work for many years on autonomous terminal seekers -- TLAM
is
one significant example, though it may not have used GPS. I worked with
some
relevant JSOW (then AIWS) P3I proposals at TI and a couple other places
back in '90 and '91.

Irrelevent.

GPS with FOG does all that already.

Fibre Optic Gyro.

GPS with a gyro of any kind does not make for post-launch reprogramming or
retargeting of the weapon.