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Re: satellite orbit computation in IDL [message #38435 is a reply to message #38329]

Mon, 08 March 2004 06:55

schaa
Messages: 10
Registered: March 2004

Junior Member

Cedric Seynat wrote:
> Hello all,
>
> I am looking for IDL routines computing satellite positions as a
> function of time, given a set of initial orbital parameters.
>
> I have implemented basic orbit computation routines myself (based on
> Keplerian parameters), but I am looking for very accurate orbit
> propagation involving atmospheric drag, luni-solar perturbations,
> earth tides etc.
>
> I have looked on the IDL libraries available on the web but did not
> find anything. If you have implemented such routines or if you can
> suggest who I can contact, I would very much appreciate to hear from
> you.

Hi Cedric,
perhaps the NAIF-group from NASA provides something that you are
looking for: high precision orbit calculations. The tool provided by
NAIF is called Spice, take a look at the website
http://naif.jpl.nasa.gov/naif.html.
This week the Icy-package for IDL version 1.0 (!) is out and can be
found on the ftp-server of NAIF, (under 0:/pub/naif/misc/edw/icy/).

Icy has to be linked against IDL's export.h (external directory) and
can be used as a dlm-kind of thing ...
An example from the Spice-tutorial is:

""
Check whether the angle between (Cassini) camera boresight and
direction to Sun is within allowed range:
cspice_spkpos( ï¿½SUN', ET, ï¿½CASSINI_ISS_NAC', ï¿½LT+S', ï¿½CASSINI',
SUNVEC, LT )
angle = VSEP( NAC_BORESIGHT_nac, SUNVEC )
""
and a lot more ...

It's open source, free and Naif answers Mails!

Best regards
-Ralf

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[Message index]

		satellite orbit computation in IDL By: cseynat on Wed, 03 March 2004 16:39
		Re: satellite orbit computation in IDL By: Craig Markwardt on Thu, 04 March 2004 20:57
		Re: satellite orbit computation in IDL By: schaa on Mon, 08 March 2004 06:55
		Re: satellite orbit computation in IDL By: Roberto Monaco on Fri, 05 March 2004 15:42
		Re: satellite orbit computation in IDL By: CED on Sun, 11 April 2004 18:57
		Re: satellite orbit computation in IDL By: Roberto Monaco on Mon, 12 April 2004 12:53

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