[amsat-bb] Re: Android/g-phone satellite tracking application

David Johnson dave at g4dpz.me.uk
Tue Nov 10 08:27:26 PST 2009


My Java source is a port of the original Predic C source and I honored
the GPLv2 that John Magliacane used for that.

It's been changed since then to increase performance when doing
predictions for multiple sats over a one day schedule, for multiple
gound-stations, as we need in Genso.

- Dave

Jonathan Guthrie wrote:
> On Fri, 2009-11-06 at 15:07 +0000, David Johnson wrote:
>> Hi,
>> I'm just writing an IARU Locator App at the moment. Once I've done that,
>> I'll have the gound-station location sorted.
>> I've already ported Predict SGP-4/SDP-4 to Java (in use by Genso) so I
>> think the next step should be relatively straightforward.
>> You can check-out the code for the algorithm using subversion from:
>> http://sourceforge.net/projects/websat/develop
>> Please note that it is licensed under GPLv2.
>> 73
>> Dave
>> G4DPZ
> It's just my luck that the parts I like to work on are the parts that
> lots of other people like to work on, and are the same parts that are
> portable and easily encapsulated.
> I'm not that fond of the GPL, but I'll look into using your code instead
> of porting my own.  Of course, that assumes that I ever actually do more
> about it than just talk.
> 73's and I hope fortune smiles upon you.

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