Re: [Orekit Developers] LocalOrbitalFrame

[Luc Maisonobe <Luc.Maisonobe@c-s.fr>]

Le 20/04/2017 à 16:22, Ward, Evan a écrit :
> Hi All,

Hi Evan,

> 
> I noticed that LocalOrbitalFrame is deprecated now. Is there a planned
> replacement? I think LOF is useful for studying relative motion,
> especially comparing one ephemeris for a satellite with another. The
> LOF frame transformation causing propagation is not a problem in this
> use case because the propagation is just interpolating an ephemeris.
> The comment on LOF suggests using SpacecraftState.toTransform() but
> that would be based on the satellite's attitude instead of the local
> orbital frame.

I understand your concern. I am not really happy with the implications,
but I understand this.

Perhaps we could remove the deprecation but put a big warning about
a full propagation being triggered each time getTransformTo is called.

I fear someone will use this for formation flying, with one spacecraft
being defined relative to the other and thousands of propagation being
run.

So go ahead with removing the deprecation, with proper documentation.

best regards,
Luc

> 
> Best Regards,
> Evan
>