Talk:Inertial navigation: Difference between revisions

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imported>Peter Schmitt
(→‎Guidance: new section)
imported>Howard C. Berkowitz
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: "Apropos "guidance", is anyone more comfortable than I in doing a mathematical introduction to inertial guidance?"
: "Apropos "guidance", is anyone more comfortable than I in doing a mathematical introduction to inertial guidance?"
What do you mean by that? To determine the path you need the velocity (direction of movement and value) at every moment (and the geometry of the space, if it is not simply the Euclidean space). --[[User:Peter Schmitt|Peter Schmitt]] 21:07, 4 March 2010 (UTC)
What do you mean by that? To determine the path you need the velocity (direction of movement and value) at every moment (and the geometry of the space, if it is not simply the Euclidean space). --[[User:Peter Schmitt|Peter Schmitt]] 21:07, 4 March 2010 (UTC)
:But accelerometers do not directly give velocity, and real-world inertial guidance systems have substantial error correction, either through gimballing or additional gyros with strapdown. It's not trivial to explain what the six gyros in a typical ring laser unit are doing. [[User:Howard C. Berkowitz|Howard C. Berkowitz]] 21:29, 4 March 2010 (UTC)

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 Definition:  Navigation method that does not depend on external references, but computes the present position by sensing the movement of the navigating platform from a precisely known starting point in space, using accelerometers to sense position changes from a reference provided by gyroscopes [d] [e]
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Guidance

Howard, elsewhere you ask:

"Apropos "guidance", is anyone more comfortable than I in doing a mathematical introduction to inertial guidance?"

What do you mean by that? To determine the path you need the velocity (direction of movement and value) at every moment (and the geometry of the space, if it is not simply the Euclidean space). --Peter Schmitt 21:07, 4 March 2010 (UTC)

But accelerometers do not directly give velocity, and real-world inertial guidance systems have substantial error correction, either through gimballing or additional gyros with strapdown. It's not trivial to explain what the six gyros in a typical ring laser unit are doing. Howard C. Berkowitz 21:29, 4 March 2010 (UTC)
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