AFG/dump1090
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Factor out the sample -> magnitude conversion code and make everything a little less sample-rate-dependent.

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Add optional noise measurement (cheaper than the old version)
Add optional DC filter (expensive, not really needed with rtlsdr input)
This commit is contained in:
Oliver Jowett 2015-06-15 22:14:37 +01:00
parent f58ff14d7c
commit 03b53c2d29
7 changed files with 454 additions and 156 deletions
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2
mode_ac.c
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@ -306,7 +306,7 @@ int detectModeA(uint16_t *m, struct modesMessage *mm)
if ((ModeABits < 3) || (ModeABits & 0xFFFF8808) || (ModeAErrs) )
{return (ModeABits = 0);}
mm->signalLevel = 1.0 * TRUE_AMPLITUDE(fSig + fNoise) * TRUE_AMPLITUDE(fSig + fNoise) / MAX_POWER;
mm->signalLevel = (fSig + fNoise) * (fSig + fNoise) / MAX_POWER;
return ModeABits;
}