3 ms·
Good INS actually involves combining several sources of information to produce a result better than any of them. A Kalman filter is the normal technique for thi
by rkangel 5y ago
Good INS actually involves combining several sources of information to produce a result better than any of them. A Kalman filter is the normal technique for this.
You're right that magnetometry information is incorporated, but better and better INS help too. Laser Ring gyros (mentioned elsewhere) were an innovation that was first developed for submarines. I have no idea what they use now.
- KennyBlanken 5y agoThe AIRS has no external references beyond the initial position set by the ground station before the missile was fired. That was why AIRS had to be so incredibly low-drift. The point of the comment in the writeup is that the DoD found that there were almost no cases where at least some sort of external reference wasn't available and thus there was no point to having such an expensive, low-drift INS.