Re: [Orekit Users] removing Droziner and Cunningham attraction models ?

[paulcefo <paulcefo@buffalo.edu>]

Luc,

Will this have an impact on DSST?

regards,

Paul

--
Dr. Paul J. Cefola
Consultant in Aerospace Systems, Spaceflight Mechanics, & Astrodynamics
Adjunct Faculty, Dept. of Mechanical and Aerospace Engineering, 
University at Buffalo (SUNY)

4 Moonstone Way
Vineyard Haven, MA 02568
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paulcefo@buffalo.edu
paul.cefola@gmail.com

On 07/12/2017 11:58 am, MAISONOBE Luc wrote:
> Hi all,
>
> We have had for years three different force models implementations
> dealing with gravity fields : Droziner, Cunningham and 
> Holmes-Featherstone.
>
> The Holmes-Featherstone, introduced in 2013, is by far the most 
> interesting.
> It has all derivatives implemented analytically, it uses normalized 
> gravity
> field and it can go beyond degree 69 (in fact up to a few thousands).
>
> As our gravity field loading mechanism allows to retrieve both 
> normalized
> and un-normalized coefficients regardless of what is canonically 
> contained
> in gravity fields files, it would be really easy for user codes using
> the older models to switch to the "new" one, while still using the 
> exact
> same gravity field.
>
> I would like to completely remove the older models.
>
> Are there any people who would complain about this removal?
>
> best regards,
> Luc