Aang254
@aang254
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A random 19yo interested in satellites and other stuff :-) Probably mostly known as SatDump's author.
France
Joined April 2020
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Pinned Tweet
(Finally, after a year minus 80 days) Releasing SatDump 1.1.0!
The list of changes since 1.0.3 is by far too long to list here, but there's an article if you want to see. If you're still on something older, you definitely should update.
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Some video from space courtesy of
@TUBspace
's TUBIN satellite. Received on X-Band by
@redplanet00
.
You can see the satellite tracking a point on Earth as it is passing overhead, as well as some wobble in attitude when it first rotates.
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Finally, after several attempts at improving it further :
Video views of
@ESA_JUICE
's moon flyby as seen from the two JMC cameras & NAVCAM, all from the data received in Bochum
@amsatdl
!
This time in color, making it even nicer :-)
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(Very much finally) Releasing SatDump 1.2.0!
A lot has changed in this release, and it especially finally brings support for products from geostationary satellites such as GOES HRIT.
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And the same - properly decoded after tiny fixes.
Still all from
@amsatdl
data :-)
Now only gotta wait for new ones to come down...
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Releasing SatDump v1.1.4, featuring VFOs in autotrack, new composites & satellites, theming support and many other additions and fixes.
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After quite a while, I am finally releasing my (still WIP but functional) standalone QPSK demodulator.
It can replace the GNU Radio flowcharts for both L and X-Band satellites, allowing for an easier setup and faster processing.
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After decoding
@dscovr_epic
's low-rate mode with
@coastal8049
,
@amsatdl
was able to get a decodable signal on high rate while transmitting to DSN stations.
After some reverse-engineering, here's the EPIC earth-imaging instrument :-)
Just the blue channel for now. It's JPEG...
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TERRA Decoder released, and added to the repo along with a demodulation flowchart.
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M2 LRPT, fully live-decoded on my phone with an Airspy HF+ Discovery.
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Quick analysis of the data received during landing and while on the surface :
A new VCID (7) appeared containing additional telemetry. APID 308 contained JPEG signatures confirming they have received some imagery :-)
Unfortunately fading won't allow me to decode further.
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And even more images from JUICE, downlinked a few minutes ago for the newer ones :
Still all from
@amsatdl
's Bochum antenna.
There's a lot of them already (more than 100!) - and they're still coming down but the rest will wait, it's late already...
:-)
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Managed to decode Falcon-9's video out of
@ok9sgc
's recording.
Thanks
@r2x0t
,
@olegkutkov
and
@OK9UWU
!
Guess I'll finish my decoder to do it all automatically from CADU and release.
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13
91
Running an USRP x410 @ 491.52MSPS with SatDump at
@SDR_Radio
. Working while using only about 2 cores :-)
Recording in 8-bits also seems to work without dropping!
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8
93
Decoding the Mars Trace Gas Orbiter, using recording published for "A Sign In Space".
If this is supposed to be an alien signal, I have to say they follow Earth's CCSDS standard to the letter :-)
~527k, Turbo 1/2, 1115. There is some data in there... I'm kinda hoping payload.
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Just because why not - decoding Inmarsat Aero on my Android phone. Didn't expect it not to work but was worth a quick test.
AMBE decoding also worked.
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Another (WIP/Draft) feature in SatDump : Fully automated reception & tracking.
Here it is running on
@CO2ESP_Raydel
's station, doing HRPT autonomously. Far from perfect but it seems to work!
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New (WIP) feature, some basic tracking.
(Rotator support is planned, yes)
Support for satellites in the TLE file & Horizons. Later the idea would be to also do some basic automation, but nothing too fancy either.
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12
87
Looking onto samples of the carrier-less signal (as
@coastal8049
pointed out earlier, that's... An extremely weird choice) from IM-1 recorded by
@amsatdl
earlier today.
1.25k BPSK, apparently a very similar format but it appears they changed rate in the middle to 2.5k.
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BlueWalker-3 received by
@Crosswalkersam
tonight around 2:40 UTC.
The (unreleased?) imagery shows the array was not yet fully deployed. Looks like
@planet4589
was right.
@coastal8049
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13
87
Decoding & listening to live audio from Inmarsat Aero calls - on Android.
Main thing that changed is some work on audio output.
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I can confirm, after patching around a bug & testing on my end Daniel's more than right :-)
Though unfortunately still looks very much encrypted.
I found out what
@Int_Machines
IM-1 is using for telemetry coding. It's all CCSDS standard: convolutional coding, scrambling, 153-byte AOS frames, CRC-16, spacecraft ID 0xCE. This is how the raster map from telemetry some days after launch looks like.
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Upcoming feature in SatDump for automated tracking :
Multi-VFO to handle overlapping passes or multiple downlinks from the same satellite if your SDR bandwidth allows.
For example here, the work-in-progress version I am receiving both NOAA-18 and 19 currently overhead together.
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Another sneak-peak into the upcoming features I recently mentioned :
You can now add more than one pipeline (as VFOs) per satellite, letting me decoding NOAA-18/19's 2 APT and 2 DSB downlinks all at the same time.
Can't miss a single drop of data :-)
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BlueWalker-3, this time received by
@Crosswalkersam
as my station is currently down.
There's a LOT more data than before. Most of the downlink is full of data. Same contents as before.
@coastal8049
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Releasing SatDump 1.1.1 (lots of ones this time)!
Includes the projection improvements, AMSU calibration by
@sp5ews
and various other fixes by
@JVital2013
.
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Some visible imagery decoded from
@TUBspace
's TUBIN satellite on X-Band, received by
@redplanet00
as it was downlinking to Berlin!
The format is not very robust unfortunately, but the satellite appears to transmit quite often in QPSK ~12M, so pretty easy to receive.
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BlueWalker-3 still definitely up to something. There's a lot more data than before on S-Band, probably a sign of something being done.
@coastal8049
@cgbassa
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Thanks
@Aaronia_AG
for sending over a Spectran V6 for support in SatDump :-)
I have already started implementing it, but still quite a few things to do.
CPU Usage in the screenshot below (@ 92.16MSPS) is about 5-7% on a Ryzen 7 1700X.
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A feature added a little while ago as I had quite a few requests to support it.
Inmarsat STD-C Decoding! - Perhaps not extremely refined at the moment, but feedback will be required to improve.
Message / EGC parsing do work.
Thanks
@microp11sat
for his work & help.
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SatDump is getting much more accurate projections in the next release, which will greatly improve their usefulness especially for X-Band imagery :-)
Here's a write-up about the entire process :
Below, a FengYun-3D pass by
@redplanet00
.
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11
74
Releasing SatDump v0.0.37.
Includes :
-
@airspy_com
HF Support
- Fixed SpyServer support (thanks
@ryzerth
)
- GVAR Support for GOES-14 and 15
- False Color on FY-2x and GOES-N (thanks
@eswnl
)
- ELEKTRO HRIT Support
- A lot of other stuff and fixes!
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15
73
Releasing SatDump 1.1.2!
Quite a bit that's new in this one. APT improvements, transparent projections to overlay eg, MHS rain overlays on AVHRR, etc :-)
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Thanks to data provided by
@redplanet00
and Andrew (MrFentazis, not on Twitter), some more METEOR decoding is finally taking shape.
60m/px resolution crop (Finland), METEOR-M 2-2 (KMSS Instrument) today in direct broadcast.
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After putting it off for a while - I finally implemented the *proper* algorithm for NOAA APT.
This makes it use the same configuration as HRPT - and increases accuracy a lot :-)
Feel free to test it in the nightlies. Data from
@JVital2013
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SatDump is (finally) getting SpyServer support! - Will be on Github soon and in the next release.
I ended up using
@lucasteske
's C++ / gr-osmosdr's implementation, modified to be standalone in this repo : .
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9
71
Oceansat-2 Decoding update...
I finally got down to binary streams!
Scrambling seems to be using a fixed pattern, so hopefully it won't be too hard.
Perhaps it even is standard CCSDS scrambling? One way to find out!
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I recently rewrote the entire DSP in SatDump, getting speed improvements overall of about 2-3x.
Now, on my machine (and anything decent, I have a Ryzen 7 1700X), it is possible to live-decode Aqua and Aura DB on X-Band :-)
(File being replayed realtime)
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Once again using the same setup, but managed to get a clean full disk.
I honestly never expected to get GOES-16 here at ~1deg with a WiFi grid...
My first decode from GOES-16 HRIT, at under 2 degrees in France received with a 100x60cm WiFi grid,
@Nooelec
GOES+and
@airspy_com
Mini.
I got a perfect lock in SatDump at ~1db SNR, but as I was holding up the dish by hand I only got a few segments.
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Finally releasing SatDump 0.0.29, with a loads of additions / improvements since 0.0.28.
I initially intended to do more before releasing (such as finishing GOES-R HRIT support, etc), but at some point I must stop postponing :-)
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A late - or early - pass of JPSS-1 over Europe. Wasn't perfect, but DNB was not affected too much, so I got very decent coverage...
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A first try on receiving LandSat-9 X-Band as it was passing this morning...
I forgot to disable my NVME's cache so it probably dropped samples, but very impressive nonetheless to demodulate 220M OQPSK!
Recorded using
@Aaronia_AG
's Spectran V6 @ 245MSPS.
~10db peak later.
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Might be a good time to remind everyone there's a DVB-S decoder in SatDump which will work just fine with HamTV... :-)
Launch!
@SpaceX
CRS-30 is on the way to the ISS, carrying the ARISS HamTV unit!
Go NASA, Go SpaceX, Go HamTV!
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Just published the fixed decoders! Thanks again
@HA6NAB_Tomi
for your help on this!
Anyone using old versions should really update, you'll quickly notice the difference.
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I have added ATMS (NPP/JPSS) calibration support in SatDump.
This allows getting radiance / brightness temperature from the instrument which will result in much more useful composites later on.
This makes it the first instrument from the series to be calibrated in SatDump :-)
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Somehow SatDump is trending on Github!? Someone just joined on Matrix and I'll admit I did not believe it.
I really wonder what's going on. It's a niche software so how can it be getting more traffic than something like RustDesk?
(On the bottom of that image)
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Thanks to
@coastal8049
monitoring & decoding STEREO-A over a long period of time, I was able to reverse-engineer and decode the SECCHI instrument!
This is being transmitted in the space weather beacon... Pretty incredible I'd say :-)
STEREO-A's pretty far!
#NASA
's STEREO-A was launched in 2006 into a solar orbit. For the first time since launch it will return close to the Earth for inferior conjunction on August 17, 2023.
Earth rotating frame shows STEREO-A spiralling towards us making it a unique event.
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Little test with
@Aaronia_AG
's Spectran this morning
@sdr_radio
, checking out FMCW radars @ 24Ghz, 245MSPS, with a "white box" down converter.
Works perfectly :-)
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ELEKTRO-L Demodulator flowchart finally added to the repo! The decoder now also produces a few composites...
Now all you need to decode is an X-Band setup that can handle it... Easier said than done!
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Finally working (with
@JVital2013
) on proper products for geostationnary (HRIT/LRIT/HimawariCast) satellites in SatDump.
This includes full projections, calibration, integration with the usual composite system & more :-)
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11
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As of now, SatDump didn't really support anything regarding CubeSat downlinks. In the long run, this will definitely be changing.
A first (for now, WIP/Experimental) is
@SkyFoxLabs
's Lucky-7 which can be decoded down to frames, further processing to come later.
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Honestly, on this one, I am speechless.
Here goes PRISMA, received by
@arvedviehweger
on X-Band, at 80MSPS on a LimeSDR.
The satellite itself is 77.5M QPSK. This is literally "that close" to the limit.
Yet, it syncs fines! :-)
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Something else I've been working on, a standalone QPSK Demodulator!
The idea is just a simple quick tool to have around and use instead of GR flowcharts. It uses libdsp (my lightweight DSP library based on GNU Radio) in the background.
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And might as well show it in action : decoding from the IQ provided on BATC's website :
Decodes just fine at ~2db SNR (simulated by adding noise), and CPU usage is barely 20% of *one* CPU core.
Might be a good time to remind everyone there's a DVB-S decoder in SatDump which will work just fine with HamTV... :-)
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Releasing SatDump 0.0.36. Includes ELEKTRO-L LRIT Composites and some other stuff.
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Some SatDump work today : I got live-processing working on Android :-)
RTL-SDR and Airspy currently supported, others will come later.
Successfully received an earlier pass of METEOR-M 2 LRPT. Also tested GOES HRIT, HRPT and S-VISSR / GVAR successfully!
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One thing that has (ironically?) be very requested for support in SatDump... APT.
So I finally put some work into and got a preliminary APT decoder implemented. Still to be considered WIP as everything is not finished, but appears to be functional.
Data by
@CO2ESP_Raydel
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7
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Some more USRP x410 fun, this time transmitting at 500Mhz SR via a GPU Upsampler
@SDR_Radio
as a custom GR block. This is resampling by 500 from a 1Mhz signal, using barely any CPU.
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7
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Releasing SatDump 1.0.0 (not in Beta anymore!).
Includes quite a few new features by
@ZSztanga
, as well as some new features and satellites.
As some of the bug-fixes are rather important, I'd highly recommend updating!
3
18
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(Finally!) Releasing my EWS-G1 / GOES-13 (GVAR) Decoder!
It can as-is be ran and handle everything needed for an automated setup without the need for GNU Radio or similar.
Instructions in the README, and Windows builds included already with SDR support!
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I've decoded the AIRS instrument on Aqua... Don't tell me that's not enough channels!
4 IR / VIS channels at 2km/px
~2300 channels at 13km/px
Full resolution :
1st image : All low-res channels
2nd image : 321 composites with HD channels
3rd image : MODIS
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Some moon imagery... With a bit of luck, more to come later. I will let you all guess what satellite this is from :-)
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The signal is 4k BPSK (subcarrier offset 64k).
1816-bits CADUs, that seemingly use some custom format.
#Chandrayaan3
other channel 2241.58MHz (~6kbps) RHCP. The other data signal on the left is USA 227 in inclined GEO orbit.⬇️
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Releasing SatDump 0.0.34 with ELEKTRO-L LRIT Support :-)
Should do L2 and L3 fine.
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I am now releasing my Proba-1/2 work, which includes demodulation flowcharts (for both GR 3.7 and 3.8), a Viterbi decoder and the imagery decoders for SWAP, CHRIS and HRC.
Huge thanks to
@r2x0t
for helping me with this and
@uhf_satcom
for the data!
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It may not be perfect on IR, but it works! Here are all 9 ELEKTRO-L channels (MSU-GS)!
I can upload full resolution images if someone is interested.
Decoder update published as well!
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54
Added (WIP) rotator control for Hamlib TCP (rotctld). Since PSTRotator is also popular I intended to (and there is something), but I will not be able to test it since there's a license requirement...
I'll likely do some direct support via serial/etc for some common models too.
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Something REALLY unexpected with FengYun-3G happened. The entire satellite has been rotated along the earth-pointing axis. Hence, images have been distorted. I'll push a fix, but this is the first time on any FY-3, very weird maneuver.
Fengyun 3G at 15:37 UTC. There seems to be something wrong with it. The images are upsite down and have a jitter 😳
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So... I rewrote my FengYun AHRPT (FY-3A/B/C/D) Decoder similarly to what I did with MetOp.
5x speed improvement, 10x if you count it was multi-threaded before!
That means live-decoding now works fine on my 8 years old laptop! And a full pass takes around a minute to decode...
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I have reverse-engineered the downlink from WSF-M1 (when unencrypted) with the data from
@plugger_lockett
. The MWI imager (literally a copy of GPM's GMI...) is operational.
Here's all 17 channels, with full support up to primitive projections in SatDump.
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Today, finally thanks to some lucky findings by
@OK9UWU
(and his data), I was able to decode the Hinode / Solar-B satellite! :-)
The X-Band transmitter has failed and all payload data is now transmitted on X-Band.
Still a bit more processing required for high-res images though.
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A first for me, Syracuse-3B on X-Band, 130cm dish! Looks like
@arvedviehweger
was right and my old mixer was the issue...
Forgive me for the very janky setup :), definitely gotta improve it!
Thanks
@arvedviehweger
,
@uhf_satcom
,
@DStolnikov
and everyone who helped me with this!
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Some more tests with the USRP x410
@SDR_Radio
. This time around, feeding the ~500MSPS to
@sylvain_azarian
's GPU DDC code to decimate to 5MSPS.
Working nicely :-)
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First imagery from FengYun-3G :-)
(Received by
@Dario24105
)
@CNSpaceflight
here is the first public FengYun-3G image decoded just now, if you're interested.
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8
52
More work on decoding EUMETSAT's MSG Raw Data downlink, this time from
@digitelektro1
data from MSG-10 as the prime full disk satellite. Turns out it's not that hard to receive at all :-)
Slowly getting a decoder capable of isolating full disks etc working, so here's a nice one!
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Peregrine is currently using a 13k BPSK subcarrier with 1024k of offset, CCSDS LDPC 7/8.
AOS of
#Peregrine
Mission One (APM1) at Bochum
@SternwarteBo
. Congratulations
@astrobotic
and
#VulcanRocket
@torybruno
@ulalaunch
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Finishing up my Orbcomm work a while ago... Adding a pipeline to do these plots live for VHF antenna checks etc.
It's quite cool to see the satellite's path draw in realtime though! :-)
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Decoding 556m/px imagery from DMSP (F17/18 as of now) on S-Band :-)
Turns out, when more toward the west US coast & after dumping, they transmit in the clear...
Received by
@LazzSnazz
!
IR is transmited at 5x lower resolution though. Of course, added support to SatDump.
1/2
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On this day in 1998, NOAA-15 was launched.
While initially planned to last for only 2 years, most instruments are still perfectly operational to this day!
And here's an image from its APT downlink - just as perfectly functional received this morning.
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ELEKTRO-L 2 Decoding : Sucess! Here's a full disk pic!
Now cleaning up my decoders so they are usable by someone else... (And maybe also decode all channels to get RGB?)
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And there we go, an official release. It's basically identical to what I managed to process from Bochum's data... That's really awesome.
Reminiscing about last night as we speed onward towards our closest approach to Earth 🛰️🌖
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A quick update on BlueWalker-3. As per the latest recordings from
@Crosswalkersam
and
@OK9UWU
, everything is now encrypted.
The frame size has changed to 2872-bits.
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METEOR-M 2-3 is active, and I have added initial support including projections in SatDump already.
LRPT works with the M2-x pipeline and I will make it project-able this evening.
1ere réception du
#satellite
🇷🇺 METEOR M2-3 depuis Nimes lors de son passage sur l'Europe à 08:05 UTC. Le satellite est bien actif en HRPT moins de 24h après son lancement !
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Releasing SatDump 1.0.2.
It's mainly bugfixes, but it also includes some AVHRR improvements by
@ZSztanga
and (initial) USRP support thanks to
@sylvain_azarian
lending me the hardware.
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