[amsat-bb] New Telemetry Decoder for FalconSat-3
Chris Thompson
g0kla at arrl.net
Sat Feb 9 19:36:38 UTC 2019
Hey Douglas,
I didn't write a demodulator. That's done by a TNC or hs soundmodem. Happy
to talk off list but I didn't code this part. It starts with kiss bytes and
then builds the directory, requests fills, supports uploads etc. As a by
product we get the telemetry and I decode and display that.
Chris
On Sat, Feb 9, 2019, 14:03 Douglas Quagliana <dquagliana at gmail.com> wrote:
> Hi Chris,
>
> I've been able to pull AX.25 frames from the satnogs .ogg recordings of
> Falconsat-3 and I usually get more valid frames than satnogs shows on the
> webpage when using my brute force demodulator (my brute force demodulator
> was the topic of my Symposium paper).
> Can you contact me off the list and let's work out how to automate
> demodulating telemetry from the existing recordings (and new recordings as
> they get added) and get it into the telemetry server.
>
> 73,
> Douglas KA2UPW/5
>
>
> On Sat, Feb 9, 2019 at 11:21 AM Corey Shields <cshields at gmail.com> wrote:
>
>> Hi Chris, we spoke at the symposium about sharing data..
>>
>> The best way to pull data would be to periodically pull from the api for
>> db.satnogs.org, however its not working at the moment[1]. I've got some
>> free time this weekend, I'll see if I can get this fixed.
>>
>> That said, we have been decoding the messages we have from falconsat-3
>> into
>> our dashboard[2] going back to April. Its just running through a message
>> decoder, no telemetry. It shouldn't be too hard to write a struct for the
>> telemetry, and re-decode the frames so we can make use of the rest of the
>> data.
>>
>> I'll reach out directly once the API is fixed..
>>
>> Cheers,
>> -Corey KB9JHU
>>
>> [1] -
>> https://gitlab.com/librespacefoundation/satnogs/satnogs-db/issues/266
>> [2] -
>> https://dashboard.satnogs.org/d/UZ30F5Xik/ax-25-monitor?refresh=1m&orgId=1
>>
>>
>>
>> On Fri, Feb 8, 2019 at 7:49 PM Chris Thompson <g0kla at arrl.net> wrote:
>>
>> > I'm not aware of that data or how to access it. If there is an archive
>> of
>> > data and it includes the WE files then it might be useful to us.
>> >
>> > 73
>> > Chris
>> >
>> > On Fri, Feb 8, 2019 at 6:25 PM Scott <scott23192 at gmail.com> wrote:
>> >
>> > > That's great, Chris! Thanks for all the work on that project.
>> > >
>> > > Regarding telemetry, does AMSAT access the data that is forwarded to
>> > > SatNogs?
>> > >
>> > > Ever since FalconSat-3 was turned over to the Amateur Community, along
>> > > with
>> > > I'm sure a lot of others, I have forwarded thousands of telemetry
>> packets
>> > > from FalconSat-3 to the SatNogs database using the DK3WN Telemetry
>> > > Forwarder
>> > > ( http://www.dk3wn.info/files/tlm_forwarder2.zip ).
>> > >
>> > > Now, I don't know HOW to access data that is forwarded to SatNogs in
>> that
>> > > way, but a lot of data is aggregated there from many of the past &
>> > > presently
>> > > active satellites that have known decoders. I'm aware that Univ.
>> > > Colorado
>> > > / Boulder obtains data from the CSIM satellite that way; I would
>> imagine
>> > > others do as well.
>> > >
>> > > Thanks again for what I'm sure was a huge job on the new software!
>> > >
>> > > -Scott, K4KDR
>> > >
>> > > =========================================
>> > >
>> > > -----Original Message-----
>> > > From: Chris Thompson
>> > > Sent: Friday, February 08, 2019 5:53 PM
>> > > To: AMSAT
>> > > Subject: [amsat-bb] New Telemetry Decoder for FalconSat-3
>> > >
>> > > I've written a new Ground station for FalconSat-3. If you had an
>> initial
>> > go
>> > > with WISP without success or if you have never tried to decode
>> > FalconSat-3,
>> > > now is a good time to try. This requires much less setup than WISP.
>> And
>> > > don't be put off if you don't have a hardware TNC, this will work
>> with a
>> > > soundcard TNC. Or, if you didn't try to listen to FalconSat-3 because
>> you
>> > > don't have a station that can transmit commands to the spacecraft,
>> then
>> > > read on. We still need your help to decode telemetry.
>> > >
>> > > In particular we would like to encourage people to download the
>> Telemetry
>> > > and forward it to an AMSAT telemetry server. Currently more
>> telemetry is
>> > > generated than we can download with AMSAT Operations ground stations.
>> > > Receive only stations can contribute to that as well as stations
>> equipped
>> > > to transmit to FalconSat-3 and request files. You can see telemetry
>> > > uploaded so far here: http://tlm.amsatfox.org/tlm/FalconSat-3
>> > >
>> > > There are details about the spacecraft, how to install the software
>> and
>> > how
>> > > it works in the manual available if you download the software or
>> online
>> > > here: http://www.g0kla.com/pacsat/pacsat_ground_manual.pdf
>> > >
>> > > You can download the software at www.g0kla.com/pacsat/index.php. I
>> have
>> > > also written some blog posts and thoughts about the software for
>> anyone
>> > > interested. They are linked from the download page.
>> > >
>> > > There is much to do here of course and most of it probably won't get
>> > done.
>> > > I would call this a beta release. If you have suggestions or bug
>> fixes
>> > > please log them online at https://github.com/ac2cz/Falcon/issues or
>> send
>> > > me
>> > > an email.
>> > >
>> > > The software is open source. All the details are here:
>> > > https://github.com/ac2cz/Falcon/ The telemetry processing and
>> display
>> > > leverages common code from FoxTelem in a library here:
>> > > https://github.com/ac2cz/libTelem/
>> > >
>> > >
>> > >
>> > > --
>> > > Chris E. Thompson
>> > > chrisethompson at gmail.com
>> > > g0kla at arrl.net
>> > >
>> > > _______________________________________________
>> > > Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> > > to all interested persons worldwide without requiring membership.
>> > Opinions
>> > > expressed
>> > > are solely those of the author, and do not reflect the official views
>> of
>> > > AMSAT-NA.
>> > > Not an AMSAT-NA member? Join now to support the amateur satellite
>> > program!
>> > > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> > >
>> >
>> >
>> > --
>> > Chris E. Thompson
>> > chrisethompson at gmail.com
>> > g0kla at arrl.net
>> > _______________________________________________
>> > Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> > to all interested persons worldwide without requiring membership.
>> Opinions
>> > expressed
>> > are solely those of the author, and do not reflect the official views of
>> > AMSAT-NA.
>> > Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> >
>>
>>
>> --
>> Corey Shields
>> _______________________________________________
>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>
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