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  • Lew Payne April 19, 2010 at 10:28pm
    That was pretty darn impressive. Thanks for sharing.
  • Michael Zaffuto April 19, 2010 at 10:20pm
    Some ICBMs used celestial navigation just prior to reentry for dead reckoning,
    SR-71 used AIS - Astro-Inertial Navigation system..pre gps
  • Moderator
    Sgt Ric April 19, 2010 at 3:22pm
    I have an old volume on missile guidance that has a chapter on optical guidance.

    It even mentions celestial navigation and it's relatively shortlived deployment.
    guidance.it
    This domain may be for sale!
  • Ken April 19, 2010 at 3:09pm
    Yes, some deployed CM use optical guidance. Sea launch Tomahawks use DSMAC, but you are right that land based Tomahawks TERCOM.

    What is an "old" CM? Shoot, the Navy was using optical scene matching in the late 80's or early 90's that I know of. Don't know how long the program existed before I learned of them. Ah, the good old days. The DSMAC guys loved to put on a good dog and pony show when the brass came to town. Hardware all over the lab benches.
  • Moderator
    Robert Krogh (hooks) April 19, 2010 at 12:59pm
    I gess CM wasn't ment for terroists..
  • Overwatch April 19, 2010 at 10:54am
    Old cruise missiles used timers, radio beam guides, altimeters and radars for guidance. Newer ones are using (among many other systems) TERCOM - Terrain Contour Matching. Basically a radar altimeter that's feeding a computer with altitude plots and using them to find its position in an onboard elevation map.

    To my knowledge no deployed CM uses optical guidance. Besides, how hard it is for a terrorist to take out a landmark or two.
    http://map.To/
  • Jonas April 19, 2010 at 6:09am
    I believe that cruise missiles (old) also worked with terrain matching.
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