Reply to post: Re: Starting point for INS

US Navy grabs old-fashioned sextants amid hacker attack fears


Re: Starting point for INS

The starting points for military INS systems are typically military bases with the known surveyed location coordinates painted on e.g. a nearby hanger wall. GPS can and is used to verify and adjust the INS position, but I would hope that a large discrepancy would be noted and investigated.

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