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daniestevez / gr-satellites

GNU Radio decoder for Amateur satellites
GNU General Public License v3.0
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Add deviation to al-Farabi-2 #643

Closed kng closed 3 months ago

kng commented 3 months ago

al-Farabi-2 (43805) Observation 9017837 dd bs=$((4*48000)) if=iq_9017837_48000.raw of=cut.raw skip=77 count=1 rawint_tune.py -i cut.raw -o cut_adj.raw -f 1000 gr_satellites al-Farabi-2 --iq --rawint16 cut_adj.raw --samp_rate 48000 --dump_path dump --disable_dc_block --deviation 1200

alfarabi2_dev1200

a bit of a sketchy one, as the satellite seems silent now and I only have recordings of it behaving erratically. the histogram is thrown off as the transmitter mostly sends 01010101 and these have a lower amplitude, the middle.

daniestevez commented 3 months ago

Noticed that the histogram is indeed biased by intersymbol interference, but the measurement at the beginning of the packet looks good.