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daniestevez / gr-satellites

GNU Radio decoder for Amateur satellites
GNU General Public License v3.0
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How to decode SSB Satellites #121

Closed ik8ozv closed 4 years ago

ik8ozv commented 4 years ago

Hi folks, I am trying to use the latest gr-satellites. I am having success to decode the FM satellites using the command:

gr_satellites [Satellite Name] --udp --samp_rate 48e3

What I want to know if you please can help me Which is the correct command to decode the SSB satellites like AO-73 or Nayif-1 etc etc. Is the command the same as above just changing the name of the satellite or I need To add some other command or it is totally different? Any help will really appreciated 73' s de Enzo IK8OZV

daniestevez commented 4 years ago

Hi Enzo,

The same command (with the appropriate satellite name) can be used for satellites using BPSK.

ik8ozv commented 4 years ago

Thanks Daniel for your quick reply. I have tried with:

gr_satellites AO-73 --udp --samp_rate 48e3

and also with:

gr_satellites Nayif-1 --udp --samp_rate 48e3

but in both the cases i do not get any incoming data in the Terminal window. 73's de Enzo IK8OZV

daniestevez commented 4 years ago

Then the problem could be with the signal you are feeding in by UDP.

Have you tried the AO-73 decoder with the ao73.wav sample file from satellite recordings?

ik8ozv commented 4 years ago

No because i do not know the right command. Can you please tell me which is the right command so i can try? Thanks 73's de Enzo IK8OZV

daniestevez commented 4 years ago 
gr_satellites FUNcube-1 --wavfile satellite-recordings/ao73.wav --samp_rate 48e3

You can find these in test.sh

ik8ozv commented 4 years ago

I'm afraid but i get the following error:

satellite-recordings/ao73.wav: No such file or directory Traceback (most recent call last): File "/usr/local/bin/gr_satellites", line 170, in main() File "/usr/local/bin/gr_satellites", line 156, in main tb = gr_satellites_top_block(parser) File "/usr/local/bin/gr_satellites", line 89, in init self.setup_input() File "/usr/local/bin/gr_satellites", line 100, in setup_input return self.setup_wavfile_input() File "/usr/local/bin/gr_satellites", line 113, in setup_wavfile_input self.wavfile_source = blocks.wavfile_source(self.options.wavfile, False) File "/usr/local/lib/python3/dist-packages/gnuradio/blocks/blocks_swig1.py", line 404, in make return _blocks_swig1.wavfile_source_make(filename, repeat) RuntimeError: can't open file

Please what am i doing wrong? Thanks 73's de Enzo IK8OZV

daniestevez commented 4 years ago

Either you're not in the correct directory, or you haven't downloaded the sample recordings. The file satellite-recordings/ao73.wav should exist in order to run

gr_satellites FUNcube-1 --wavfile satellite-recordings/ao73.wav --samp_rate 48e3

If the file is located elsewhere, please substitute the appropriate path to this file in the command.

ik8ozv commented 4 years ago

Apologise Daniel, the satellite-recordings folder is located in the gr-satellites one and it has all the wav files. Thanks 73's de Enzo IK8OZV

ik8ozv commented 4 years ago

I have tried with the following command:

gr_satellites FUNcube-1 --wavfile gr-satellites/satellite-recordings/ao73.wav --samp_rate 48e3

but after a couple of seconds i get the prompt back Is it normal? Thanks 73's de Enzo

daniestevez commented 4 years ago

No. It should print out some telemetry data before returning to the prompt. Since it doesn't, I guess there is a problem with your system. A few ideas:

ik8ozv commented 4 years ago

This is the result i get running the command:

ctest -V

into the folder /gr-satellites/build

UpdateCTestConfiguration from :/home/enzo/gr-satellites/build/DartConfiguration.tcl UpdateCTestConfiguration from :/home/enzo/gr-satellites/build/DartConfiguration.tcl Test project /home/enzo/gr-satellites/build Constructing a list of tests Done constructing a list of tests Updating test list for fixtures Added 0 tests to meet fixture requirements Checking test dependency graph... Checking test dependency graph end test 1 Start 1: qa_hdlc

1: Test command: /usr/bin/sh "/home/enzo/gr-satellites/build/python/qa_hdlc_test.sh" 1: Test timeout computed to be: 10000000 1: . 1: ---------------------------------------------------------------------- 1: Ran 1 test in 0.012s 1: 1: OK 1/3 Test #1: qa_hdlc .......................... Passed 0.53 sec test 2 Start 2: qa_ao40_fec_deframer

2: Test command: /usr/bin/sh "/home/enzo/gr-satellites/build/python/components/deframers/qa_ao40_fec_deframer_test.sh" 2: Test timeout computed to be: 10000000 2: . 2: ---------------------------------------------------------------------- 2: Ran 1 test in 0.019s 2: 2: OK 2/3 Test #2: qa_ao40_fec_deframer ............. Passed 0.91 sec test 3 Start 3: qa_satyaml

3: Test command: /usr/bin/sh "/home/enzo/gr-satellites/build/python/satyaml/qa_satyaml_test.sh" 3: Test timeout computed to be: 10000000 3: . 3: ---------------------------------------------------------------------- 3: Ran 1 test in 0.157s 3: 3: OK 3/3 Test #3: qa_satyaml ....................... Passed 0.22 sec

100% tests passed, 0 tests failed out of 3

Total Test time (real) = 1.66 sec enzo@ubuntu:~/gr-satellites/build$

73's de Enzo IK8OZV

ik8ozv commented 4 years ago

Daniel, i have tried to do what reported in #88 (comment). Running the command:

volk_profile

i get like a loop. Is it normal? It also say to be sure that in ~/.volk/volk_config has the line

volk_8u_x4_conv_k7_r2_8u spiral spiral

I cannot find the path to the file. Any advice please Thanks 73's de Enzo

K4KDR commented 4 years ago

It may be worth noting that the 'gr-satellites' command run as indicated would only work when run from your HOME directory (assuming the 'satellite-recordings' folder is under HOME).

To be safe, it's always smart to fully qualify the path to any folder referenced in a command, as shown in the following example from my computer: (please note the "~/satellite-recordings/ao73.wav" path for the location of the ao73.wav file even though I'm running the command from the /TMP folder)

k4kdr@k4kdr-u1804:/tmp$ gr_satellites FUNcube-1 --wavfile ~/satellite-recordings/ao73.wav --samp_rate 48e3
Frame type WO10
----------------------------------------
Realtime telemetry:
----------------------------------------
Container: 
    eps = Container: 
        photovoltage = ListContainer: 
            0
            0
            0
        photocurrent = 0
        batteryvoltage = 8140
        systemcurrent = 206
        rebootcount = 721
        softwareerrors = 0
~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~
ik8ozv commented 4 years ago

Scott, thanks for you suggestion but even running how you said i get the same error, but if i copy the whole folder from gr-satellites to the Home folder i do not get any error but also i do not get any data but just the prompt back. Thanks 73's de Enzo IK8OZV

K4KDR commented 4 years ago

Also in regard to the "volk_profile" command... it runs for a LONG time. Depending on your system, perhaps 1/2 hour or more.

So, just walk away until it completes, no matter how long it takes.

ik8ozv commented 4 years ago

Thanks Scott, I run it again and left it running. I will see when back. Please what about the command Dani said:

It also say to be sure that in ~/.volk/volk_config has the line

volk_8u_x4_conv_k7_r2_8u spiral spiral

I cannot find the path to the file. Any advice please Thanks 73's de Enzo IK8OZV

ik8ozv commented 4 years ago

Hi Dani and Scott, ran the command til the end ( Thanks Scott ) then at the end i got:

Writing /home/enzo/.volk/volk_config...

Opened the config file how suggested by Danibut could not find the line :

volk_8u_x4_conv_k7_r2_8u spiral spiral

I found a similar one that i thin k is not the same:

volk_8u_x4_conv_k7_r2_8u generic generic

Please what to do? Do i have to add the line in the file? Thanks to both.

73's de Enzo IK8OZV

K4KDR commented 4 years ago

Sorry, not familiar with manually adjusting the results of the volk_profile command. I have always run the command and let the results stand as-is.

ik8ozv commented 4 years ago

OK Scott, i did not modify anything and now it seems i got the data incoming whe i digit:

gr_satellites AO-73 --wavfile ~/satellite-recordings/ao73.wav --samp_rate 48e3

So i think it will work. Now i am waiting that an SSB satellite rises up so i can test it with the satellite. Just another question. please how to do for BY70-2 as it is new? Thanks 73's de Enzo IK8OZV

K4KDR commented 4 years ago

BY70-2 is not part of this issue; please see https://github.com/bg2bhc/gr-lilacsat

daniestevez commented 4 years ago

Regarding volk_profile, the line

volk_8u_x4_conv_k7_r2_8u generic generic

means that Volk has chosen to use non-optimized plain C implementation of the Viterbi decoder, most likely because your CPU doesn't support SSE3 (you can check with cat /proc/cpuinfo).

Now, if I run on my system using generic, I get a correct decode with the ao73.wav sample file. The same happens if I run with the spiral optimized SSE3 Viterbi decoder. I also get correct decodes if I delete my ~/.volk altogether.

So just to be clear, @ik8ozv, you weren't able to get decodes with the ao73.wav file, then you run volk_profile until it finished, and after this you are able to get decodes with the ao73.wav file. Is this correct?

I'm starting to suspect that there are some systems where the Volk Viterbi decoder fails unless volk_profile has been run.

ik8ozv commented 4 years ago

Yes Dani, you are correct, Right now i have finished a pass with AO-73 and i got a lot of data incoming. I also gave the command to create a .kss file so i could paste it into the DK3WN's Telemetry Decoder but i have noticed that it ask for a bin file. I have opened the kss file in the decoder and got just the upper side filled while the bottom not. Attached is what i mean. Thanks 73's de Enzo IK8OZV AO-73

daniestevez commented 4 years ago

I'm not sure what file format is used by the DK3WN decoder, so I can't help with that.

Now that this is solved, I'm closing this and adding a note to the documentation recommending to run volk_profile to prevent other people from having these problems.