Commit Graph

53 Commits

Author SHA1 Message Date
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."
This reverts commit d56f359b69.
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
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.
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.
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.
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.
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.
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.
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.
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