IRS and INS
I have not had the opportunity to use an IRS or INS nav system, and do not have any info on it.
I have the basics on INS - gyros accelerometers velocity and distance travelled. Must be intialized from a known coordinates. Don't know how it establishes true north other than by the refernce to coordintes it is given.
IRS I have no info on.
I think that it is the ability of IRS to use nav aids to determine position.
any takers?
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Thrust till you see god, then rotate