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Integrate vector in rotating frame? |
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| Jan6-12, 11:00 AM | #1 |
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Integrate vector in rotating frame?
Hi.
Ok, so I'm trying to understand the "navigation equations". n: frame traveling on earth with vehicle. e: frame centered in earth, rotating with it. P: Position of vehicle center of gravity. v[itex]^{n}_{P/e}[/itex] = (vn,ve,vd): velocity of P w.r.t to e-frame, expressed in n-frame. Normally you don't integrate this, but uses vn,ve,vd to calculate the derivative of longitude,latitude,height and then integrate these to get position in longitude,latitude,height. BUT, my question is: what do you get if you integrate vn,ve,vd? I mean, normally when you integrate vectors: - the frame is fixed in space - you have a velocity w.r.t this frame - and you just integrate each component separately But now - the frame is rotating - velocity is not w.r.t this frame Any thoughts? /Jonas |
| Jan6-12, 04:22 PM | #2 |
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Bump. My only thought is I so wish some of the cognoscenti here would comment on your questions Hare. I suspect perhaps a few are brave enough to jump into this rabbit warren with no visible bottom. Certainly not I, but some answers here might be helpful on a related subject. Anyone?
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