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Improved LTR FSK decoder for LTR, LTR-Net and Passport decoders. Added IIR DC blocking filter and used improved slicer from the FSK decoder.

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Added instrumentation to Passport decoder and updated some of the instrumentation components.
This commit is contained in:
dennis.sheirer
2014-05-01 23:24:51 +00:00
parent d7115f2886
commit da1db8a804
25 changed files with 803 additions and 496 deletions
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11
src/decode/ltrstandard/LTRStandardDecoder.java
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@@ -25,6 +25,7 @@ import bits.SyncPattern;
import decode.Decoder;
import decode.DecoderType;
import dsp.filter.DCRemovalFilter2;
import dsp.fsk.LTRFSKDecoder;
import dsp.nbfm.FilteringNBFMDemodulator;
public class LTRStandardDecoder extends Decoder
@@ -38,7 +39,7 @@ public class LTRStandardDecoder extends Decoder
public static final int sLTR_STANDARD_MESSAGE_LENGTH = 40;
private FilteringNBFMDemodulator mDemodulator;
private DCRemovalFilter2 mDCRemovalFilter;
private LTRFSKDemodulator mLTRFSKDemodulator;
private LTRFSKDecoder mLTRFSKDecoder;
private MessageFramer mLTRMessageFramer;
private LTRStandardMessageProcessor mLTRMessageProcessor;
@@ -74,7 +75,7 @@ public class LTRStandardDecoder extends Decoder
mDCRemovalFilter.setListener( this.getFloatReceiver() );
}
mLTRFSKDemodulator = new LTRFSKDemodulator();
mLTRFSKDecoder = new LTRFSKDecoder();
/**
* The DC removal filter will impact performance of the LTRFSKDemod,
@@ -82,11 +83,11 @@ public class LTRStandardDecoder extends Decoder
*/
if( mSourceSampleType == SampleType.COMPLEX )
{
mDemodulator.addListener( mLTRFSKDemodulator );
mDemodulator.addListener( mLTRFSKDecoder );
}
else
{
mDCRemovalFilter.setListener( mLTRFSKDemodulator );
mDCRemovalFilter.setListener( mLTRFSKDecoder );
}
if( direction == MessageDirection.OSW )
@@ -102,7 +103,7 @@ public class LTRStandardDecoder extends Decoder
sLTR_STANDARD_MESSAGE_LENGTH );
}
mLTRFSKDemodulator.addListener( mLTRMessageFramer );
mLTRFSKDecoder.addListener( mLTRMessageFramer );
mLTRMessageProcessor = new LTRStandardMessageProcessor( direction, aliasList );
mLTRMessageFramer.addMessageListener( mLTRMessageProcessor );