Joe Taylor
2b25c51169
First fully working version of 'a7' (q3-style) decoding for FT8.
2021-10-28 15:01:00 -04:00
Joe Taylor
901e9dbc38
Working program test_ft8q3 and subroutine ft8q3().
2021-10-26 16:40:14 -04:00
Joe Taylor
a5be2fb4ef
TEMPORARY: save downsampled data at f0=1500 Hz, for testing ft8q3.
2021-10-26 08:58:06 -04:00
Steven Franke
d147eae27e
FT8: make sure that nbadcrc is initialized to true before each decoding attempt.
2020-06-21 20:36:19 +01:00
Joe Taylor
9208ac55b8
Another try: Ignore messages decoding to i3.n3 = 0.2.
2020-06-21 20:36:19 +01:00
Joe Taylor
ad0ff6d2be
Revert "Messages decoding to i3.n3 = 0.2 are now ignored: 0.2 is not currently used."
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This reverts commit d56f359b69
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2020-06-21 20:36:19 +01:00
Joe Taylor
ac1e007238
Messages decoding to i3.n3 = 0.2 are now ignored: 0.2 is not currently used.
2020-06-21 20:36:19 +01:00
Steven Franke
2eca4001a0
cosmetic change.
2020-06-21 20:35:59 +01:00
Steven Franke
72a1a03db1
Detune the Normal decode setting a bit to reduce false decodes even more.
2020-06-21 20:35:59 +01:00
Steven Franke
fb60ec0be5
FT8: Make the Fast decode setting Faster.
2020-06-21 20:24:25 +01:00
Joe Taylor
db6d3c9e84
Eliminate a few more false decodes.
2020-05-18 10:32:17 -04:00
Joe Taylor
e770e967e6
Filter out very weak FT8 false decodes.
2020-05-17 13:25:52 -04:00
Steven Franke
9b6dd092c5
Streamline decoding to use a single call to decode174_91.
2020-05-05 11:59:43 -05:00
K9AN
6363f3fd43
Change maxsuper to 1.
2020-05-04 15:28:16 -05:00
Steven Franke
ceb8ae610a
Oops - decoding depths were set for uncoupled decoding.
2020-05-04 13:58:17 -05:00
Steven Franke
093c403063
Implement coupled BP->OSD decoding for FT8/FT4.
2020-05-04 13:13:49 -05:00
Joe Taylor
d3f8793578
Better correction for very weak false decodes in ft8b.f90. Revert an incorrect change in jt9.f90.
2020-05-04 10:55:53 -04:00
Steven Franke
1d2a0f39ac
Tweak SNR calibration for better tracking at low SNR.
2020-05-03 08:51:55 -05:00
Steven Franke
db773cf7dd
Make a change to decrease the number of false decodes.
2020-05-02 10:45:04 -05:00
Joe Taylor
00e8027c29
Implementing new Type 5 messages for EU VHF contests.
2020-04-21 13:48:47 -04:00
Joe Taylor
a6089bc196
Silence compiler warnings.
2020-03-19 11:27:57 -04:00
Steven Franke
8f7221825f
First cut at setting up Fast/Normal/Deep parameters.
2020-03-17 08:51:37 -05:00
Steven Franke
3467ee7924
Make Normal decode the same as Deep except no DT refinement at nearly=47.
2020-03-06 11:54:28 -06:00
Joe Taylor
f367b6d6b9
Temporary version: decode call at 47 buffers only does subtractions.
2020-03-06 10:38:24 -05:00
Joe Taylor
431ec50212
Progress toward decoding at 41/47/50 buffers. Not yet complete!
2020-03-05 15:37:31 -05:00
Steven Franke
761ee1cd85
Merge branch 'develop' of bitbucket.org:k1jt/wsjtx into develop
2020-02-29 13:47:09 -06:00
Steven Franke
037805ca8f
Improve dt estimation in ft8b so that dt refinement procedure in subtractft8.f90 can be done with 4 calls to sqf instead of 7.
2020-02-29 13:46:59 -06:00
Joe Taylor
f9322f2b43
Add calls to timer() around calls to subtractft8().
2020-02-28 11:25:32 -05:00
Joe Taylor
ff46c5a0c4
In subtractft8.f90: refine DT for early decodes before subtracting them from dd().
2020-02-24 16:18:42 -05:00
Steven Franke
ac1d0f837d
Comment out diagnostic write statement.
2020-02-17 10:56:47 -06:00
Steven Franke
20b942b802
FT8: Add an experimental 4'th bit metric. Make dupe removal unconditional.
2020-02-17 10:53:52 -06:00
Joe Taylor
4a4864d2ae
FT8 early decoding is now working.
2020-02-13 15:05:37 -05:00
Steven Franke
ff109a60ca
Implement AP decoding for Hounds when Fox has a compound call with standard base call.
2020-02-03 10:48:51 -06:00
Steven Franke
70b84478f0
Add WW_DIGI to the special activities section. Make necessary changes to
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the decoders. Also, an experimental change to the FT4 decoder to base
AP decoding passes on 4-symbol block detection instead of single symbol
detection. This provides about 1 dB improvement on the AWGN channel.
Sensitivity changes on other channels are TBD.
2020-01-24 11:26:36 -06:00
Steve Franke
e8d17a9898
FT4: Subtraction is basically working.
2019-04-18 14:16:39 -05:00
Steve Franke
c4d078f55f
Remove unnecessary character string space-padding.
2019-01-03 14:02:17 -06:00
Steve Franke
7a40bf2e4b
Use separate hash tables for 10, 12, and 22 bit hashes. Make unpacking i3=4 messages depend on whether unpack is being done on a received message, or a to-be-transmitted message. Give mycall13 priority over hash table entries in certain contexts.
2018-12-20 15:08:29 -06:00
Steve Franke
307948a25d
Remove an unused array.
2018-12-16 11:55:36 -06:00
Steve Franke
337bae6d0d
Housekeeping. Remove unused code and unused variables. Silence some compiler warnings.
2018-12-05 16:06:33 -06:00
Steve Franke
6fc27d550d
Fix an egregious bug and another not-so-egregious bug. The egregious bug prevented decodes of most signals with negative DT.
2018-12-03 07:18:52 -06:00
Steve Franke
df37d9b1f7
Remove cqhund stuff and some other unused code.
2018-11-30 13:46:54 -06:00
Joe Taylor
0235cf69ff
Remove all vestiges of old (isync=1) FT8 mode. Many changes here!
2018-11-05 11:59:48 -05:00
Steve Franke
48b60eab71
Make two sync passes, one for each sync array. Label candidates with their type and decode accordingly.
2018-06-05 16:44:52 -05:00
Joe Taylor
5d1df32387
Replace some temporarily removed code in ft8b, and some general cleanup.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8443 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2018-01-30 16:57:14 +00:00
Joe Taylor
c1bd6060dd
New utility program ft8code. Remove unused references to recent_calls() in FT8 mode.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8440 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2018-01-30 15:25:10 +00:00
Joe Taylor
c353ec244f
Additional changes to enable Fox to use a compound callsign.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8364 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2017-12-22 18:00:47 +00:00
Joe Taylor
5c87f329a0
Better support for compound callsigns in DXpedition mode.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8351 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2017-12-19 20:01:06 +00:00
Joe Taylor
8f7ca2851c
Fix a number of minor bugs in FT8 DXpedition mode.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8340 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2017-12-18 19:07:10 +00:00
Joe Taylor
100c73b851
Now seems to compile OK in Linux.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8308 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2017-12-09 00:36:52 +00:00
Joe Taylor
1557b9cb99
Hound now transmits correctly.
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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8300 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2017-12-08 19:53:27 +00:00