3 ms·
> Which is funny, because to know you're higher/faster than allowed you need to calculate that from GPS data Actually, no. All military aircraft have inertial
by vonmoltke 14y ago
> Which is funny, because to know you're higher/faster than allowed you need to calculate that from GPS data
Actually, no. All military aircraft have inertial navigation packages that, among other values, provide altitude above the elipsoid, position, and velocity vector. When available, these systems are fixed periodically to GPS-based measurements.
- raverbashing 14y agoYes, but GPS modules can't expect to have this information input into them. See http://en.wikipedia.org/wiki/CoCom http://en.wikipedia.org/wiki/CoCom You're right from the point of view of the aircraft/missile, where several pieces of information are put together (GPS, barometric, inertial, etc) for navigation purposes.
- vonmoltke 14y agoRight, minor brain fart. I was thinking at the systems level, but the requirement is for the module to cut itself out, not have an external system do it.