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deeptho / linux_media

neumoDVB blindscan drivers media_tree
https://github.com/tbsdtv/linux_media/wiki
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incorrect peak estimation #5

Closed psyborg55 closed 2 years ago

psyborg55 commented 2 years ago

when two transponders are close to each other, neumodvb assumes it is one transponder and estimates incorrect freq/width example on 10978 V, same issue spotted at 23.5e too Screenshot from 2022-06-25 22-59-46

proprietary code detect this properly

retuning
    FE_GET_EVENT: stat=31, signal=1 carrier=1 viterbi=1 sync=1 timedout=0 locked=1
RESULT: freq=10975.364V Symrate=4599  Stream=-1    MATYPE: 0x0
MODCODE: 0xffffffff
SIG=-26.68dB CNR=7.78dB DVB-S2 8PSK FEC_5_6 INV_OFF PIL_ON  ROLL_35
retuning
    FE_GET_EVENT: stat=31, signal=1 carrier=1 viterbi=1 sync=1 timedout=0 locked=1
RESULT: freq=10981.155V Symrate=4599  Stream=-1    MATYPE: 0x0
MODCODE: 0xffffffff
SIG=-26.68dB CNR=4.77dB DVB-S2 8PSK FEC_5_6 INV_OFF PIL_ON  ROLL_35
deeptho commented 2 years ago

Peak detection will change again in new versions, so check again. It is a matter of choices also.