Integrate vector in rotating frame?

AI Thread Summary
The discussion revolves around the complexities of integrating velocity vectors in a rotating frame, specifically in the context of navigation equations for a vehicle on Earth. The user seeks clarity on the implications of integrating the velocity components (vn, ve, vd) when the frame is not fixed and the velocity is relative to a rotating frame. Typically, integration is straightforward when the frame is stationary, but the challenge arises due to the frame's rotation and the nature of the velocity reference. The conversation highlights a need for expert insights into this nuanced topic. Overall, the integration of these vectors in a rotating frame presents significant challenges that require further exploration.
Hare
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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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