Integrate vector in rotating frame?

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SUMMARY

This discussion focuses on the integration of velocity vectors in a rotating frame, specifically the navigation equations involving a vehicle on Earth. The user, Jonas, questions the implications of integrating the velocity components (vn, ve, vd) when the frame of reference is not fixed but rotating with the Earth. The conversation highlights the complexity of calculating position in longitude, latitude, and height when the velocity is relative to a rotating frame rather than an inertial one.

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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^{n}_{P/e} = (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
 
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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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