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ChirpChat demod: optimize SFD detection

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f4exb 2024-04-05 14:43:17 +02:00
parent 788df1eda3
commit 1691a3dfb3
1 changed files with 3 additions and 1 deletions
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4
plugins/channelrx/demodchirpchat/chirpchatdemodsink.cpp
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@ -286,8 +286,10 @@ void ChirpChatDemodSink::processSample(const Complex& ci)
m_preambleHistory[m_chirpCount] = imax; m_preambleHistory[m_chirpCount] = imax;
m_chirpCount++; m_chirpCount++;
double preDrop = magsqPre - magsqSFD;
double dropRatio = -preDrop / magsqSFD;
if (magsqPre < magsqSFD) // preamble drop if ((preDrop < 0.0) && (dropRatio > 0.5)) // preamble drop
{ {
m_magsqTotalAvg(magsqSFDTotal); m_magsqTotalAvg(magsqSFDTotal);