Joe Taylor
fb6fcdf35e
Mostly(?) temporary diagnostic tests.
2021-01-06 10:24:08 -05:00
Joe Taylor
47c8286db8
Disallow Q65 decodes with sum(dat4)=0: all 78 bita are zero.
2021-01-05 19:45:00 -05:00
Joe Taylor
4fb90e336e
Better orange sync curve. Clear message averaging after a successful decode.
2021-01-05 11:30:22 -05:00
Joe Taylor
f82356e199
q65sim: nonzero step size ==> Doppler tracking; otherwise, linear drift.
2021-01-05 10:42:19 -05:00
Joe Taylor
b8bd745816
Merge branch 'feat-fst280' of bitbucket.org:k1jt/wsjtx into feat-fst280
2021-01-05 09:53:54 -05:00
Joe Taylor
ea271152b8
Implement "orange sync curve", useful for multi-signal situation.
2021-01-04 14:38:02 -05:00
Bill Somerville
f2e9c1d91d
Merge branch 'develop' into feat-fst280
2021-01-04 15:53:21 +00:00
Bill Somerville
94977df845
Merge branch 'release-2.3.0' into develop
2021-01-04 15:38:06 +00:00
Bill Somerville
607a346cf1
Add new function needed for FST4W decoder updates
2021-01-04 15:35:32 +00:00
Steven Franke
0013b15120
Remove some debug code.
2021-01-04 15:00:05 +00:00
Steven Franke
46222c61ed
Add rudimentary sanity checks to the values parsed from FST4W_ALSO_FST4.
2021-01-04 15:00:05 +00:00
Steven Franke
41f587c240
Fix a conflict between noise baseline percentile level and noise blanker percentage. Both were using the npct variable. Add an option for an FST4 pass when in FST4W mode.
2021-01-04 15:00:05 +00:00
Steven Franke
0fef0cc6e6
Minor formatting change in fst4_decodes.dat.
2021-01-04 15:00:04 +00:00
Steven Franke
a38b48d13d
Minor format change for nutc in fst4_decodes.dat.
2021-01-04 15:00:04 +00:00
Steven Franke
a657ce29a7
FT8: Make nagain work.
2021-01-04 15:00:04 +00:00
Steven Franke
41297e8761
FT8: Commit the rest of the fix for the nagain crash.
2021-01-04 15:00:04 +00:00
Steven Franke
b51bda4806
FT8: Fix jt9 crash when nagain is invoked.
2021-01-04 15:00:04 +00:00
Steven Franke
4081be94e1
Avoid a possible of bounds error. Compute some more decode diagnostic data.
2021-01-04 15:00:03 +00:00
Steven Franke
fb7b751e6d
Remove hmod from command line parameters for fst4sim.
2021-01-04 15:00:03 +00:00
Steven Franke
701d517e6e
For fst4sim, use Lorentzian fading spectrum when fspread is negative.
2021-01-04 15:00:03 +00:00
Steven Franke
b087328fc1
Don't waste time on excess BP iterations when doing K=50. Decode a little deeper.
2021-01-04 15:00:03 +00:00
Steven Franke
8079d35561
Append decoder data to file fst4_decodes.dat instead of overwriting.
2021-01-04 15:00:02 +00:00
Steven Franke
89cbd177df
If file decdata is present in the data directory, then write detailed decoder data to file fst4_decodes.dat in the same directory.
2021-01-04 15:00:02 +00:00
Steven Franke
812bd29e54
FST4W: Use K=66 for first OSD decode attempt and for updating fst4w_calls.txt. Use K=50 for 2nd attempt.
2021-01-04 15:00:02 +00:00
Steven Franke
fc3e24f696
More work on K=50 decoding.
2021-01-04 15:00:01 +00:00
Steven Franke
65ff3ce05e
Remove some debug prints.
2021-01-04 15:00:01 +00:00
Steven Franke
11b7aa9429
Implements decoding of FST4W messages as (240,50) crc-less codewords.
...
By cascading the full 24-bit crc generator matrix with the (240,74) LDPC code generator, create a (240,50) generator that is used to decode with approximately 1 dB better sensitivity than the (240,64) with 14-bit CRC approach that is normally used. This approach treats the CRC bits as additional parity bits and provides no means for identifying incorrect codewords. All codewords on the list generated by the OSD algorithm have CRCs that match the CRC of the message payload. Codewords are validated by unpacking the message and comparing the unpacked message with the list of stored callsign/grid pairs stored in the fst4w_calls.txt file.
2021-01-04 14:59:56 +00:00
Joe Taylor
662a43d3dd
Corrections to the frequency-drift feature in q65sim.
2021-01-04 09:07:03 -05:00
Joe Taylor
6074e4e3af
Options for introducing frequency drift and frequency steps (e.g. 10 Hz) in Q65 simulator.
2021-01-03 11:19:39 -05:00
Joe Taylor
a02cbabb99
Fix an off-by-1 bug introduced in the previous commit.
2021-01-03 11:18:14 -05:00
Joe Taylor
04b22ce250
Preparing to add solution for frequendy drift to q65_sync.f90.
2021-01-02 14:21:14 -05:00
Joe Taylor
bc58604d42
Allow optional frequency drift of simulated Q65 signals.
2021-01-02 13:09:47 -05:00
Joe Taylor
e5a8e80c49
Minor tweaks to Q^% decoding scheme.
2021-01-01 15:28:41 -05:00
Joe Taylor
6b351165f2
Re-introduce Q65 timer calls. Extend red sync baseline to minimum +/- 100 Hz.
2021-01-01 10:47:22 -05:00
Joe Taylor
8a4b5b6a40
Various tweaks to the Q65 decoder; new numbering of the end-of-line decoding flags.
2020-12-31 15:52:06 -05:00
Joe Taylor
bcbca02c08
Enforce Q65 ClrAvg action when requested. Tweak somne logic.
2020-12-30 16:12:02 -05:00
Joe Taylor
e07ba410c2
Fix a problem with access to apsym0() array.
2020-12-30 15:40:06 -05:00
Joe Taylor
5d7b5f83e2
Fix several more flaws in the way Q65 decodes are presented.
2020-12-30 15:05:02 -05:00
Joe Taylor
77a0e01b05
Allow for all AP types when averaging Q65, and for navg > 9.
2020-12-30 12:10:03 -05:00
Joe Taylor
91687c573b
Fix the reporting of SNR for Q65 average decodes.
2020-12-30 11:02:49 -05:00
Joe Taylor
412422db17
Add 'q' to the Q65 end-of-line flags; label right text window for "Average decodes".
2020-12-30 10:42:27 -05:00
Joe Taylor
d81c01d23d
Remove unneeded arguments from calls to q65_avg and q65_avg2.
2020-12-30 09:07:41 -05:00
Joe Taylor
057967a761
For Q65 nsg averaging, wrap nsave when it reaches MAXAVE.
2020-12-30 08:44:56 -05:00
Joe Taylor
b6d2002985
Q65 decoder mostly working now with all (A B C D) decoding types.
2020-12-29 16:41:48 -05:00
Joe Taylor
520a0c7cc0
Work in progress for Q65 decoder.
2020-12-28 18:53:13 -05:00
Joe Taylor
62074ab58f
Much reworking of Q65 decoder. Have temporarily enabled all types of decoding passes.
2020-12-28 15:27:10 -05:00
Joe Taylor
30ab29d9e3
Work in progress, with lots of diagnostics. Do not use on the air!
2020-12-27 15:27:26 -05:00
Joe Taylor
48297e068b
More work in ptogress ...
2020-12-27 14:14:10 -05:00
Joe Taylor
d246a23948
Work in progress on message averaging: save current status.
2020-12-27 11:35:55 -05:00
Joe Taylor
5c805dfb39
another realignment of red sync curve and convention for f0.
2020-12-27 10:35:04 -05:00
