[amsat-bb] Re: Charge for Satellite Tracking?

[i8cvs]

----- Original Message ----- 
From: "Armando Mercado" <am25544 at triton.net>
To: <amsat-bb at amsat.org>
Sent: Monday, October 31, 2011 9:44 AM
Subject: [amsat-bb] Re: Charge for Satellite Tracking?

> Greetings,
> 
> Well, how would we feel if  USSTRATCOM started
> charging for the use of their data that we use to
> track our satellites?
> 
> 
> 73, Armando N8IGJ
> 
Hi Armando, N8IGJ

If our satellite has an onboard transponder it is possible
to create the keplerian elements at a  ground control station
using the following method:

http://www.amsat.org/amsat/articles/g3ruh/123.html

And this is why a linear transponder is justified on board of
our AMSAT satellites. 

If the satellites is equipped with an apprpriate GPS system
like on AO40 it's onboard computer can calculate it's position
on the space and a ground control station can derive it's 
keplerian elements in real time and distribute it to the users
via TLM messages.

ftp://rsd.gsfc.nasa.gov/pub/chesters/goesref/Moreau_GPS.pdf

73" de

i8CVS Domenico