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WSJT-X
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92 Commits

Author SHA1 Message Date
Joe Taylor e4ba9f25fd Process one more 3456-sample chunk in ft4d. 2019-02-14 15:21:01 -05:00
Joe Taylor 55e0e32e59 Fix ft4d so that it reads and processed full 15-second files. 2019-02-14 15:10:41 -05:00
Joe Taylor 9a6c82d09b Tweaks to make valgrind somewhat happier. 2019-02-14 14:56:02 -05:00
Joe Taylor 073a22125a Minor cleanup: debugging a problem with FT4 decoding. 2019-02-14 14:09:22 -05:00
Joe Taylor c2cb55a68a Reduce FT4 chunk size fro 500 to 288 ms; suppress duplicate decodes from close to chunk ends. 2019-02-13 14:42:57 -05:00
Steve Franke 186482811a Use 91 bits for RR73 messages. 2019-02-09 16:08:39 -06:00
Steve Franke b415faae20 Remove char(0) from mycall and hiscall. 2019-02-08 16:44:18 -06:00
Steve Franke 0f03d02e74 Merge branch 'feat-ft2' of bitbucket.org:k1jt/wsjtx into feat-ft2 2019-02-08 15:17:52 -06:00
Steve Franke 33498cc10f Disable AP if ncontest=5 or 6 (Fox and Hound). 2019-02-08 15:17:46 -06:00
Steven Franke 7d70c5e9e1 Still trying to make data_dir work under all conditions. This makes it work with ft4d. 2019-02-08 11:24:22 -06:00
Steve Franke e3830dcb27 Remove temporary indent file. 2019-02-07 18:52:51 -06:00
Steve Franke cbfcb76193 AP decoding basically works. Make data_dir setting work on the Mac. 2019-02-07 18:48:38 -06:00
Steve Franke ecbeda5297 Disable sync2 calculation for now. 2019-02-07 10:16:28 -06:00
Steve Franke 60cb4a33aa Re-enable second sync pass. 2019-02-05 19:53:53 -06:00
Steve Franke 71cb6d9f50 Use 4 different Costas arrays to prevent false syncs as received frames move 
through the analysis window.

Add a random 77-bit vector to each message so that tone transitions occur
even if the message contains a long string of 0 or 1 (like a CQ).

Add alternative sync calculation as an option (sync2), for testing.

Add basic framework for AP decoding.
 2019-02-05 19:18:50 -06:00
Steve Franke 91e3dbdf20 New scheme for finding candidates. Speed up sync. Improved SNR calibration. 2019-02-02 16:29:17 -06:00
Steve Franke 40fd3f6551 Make writing to data_dir work on the Mac. 2019-02-02 11:04:11 -06:00
Joe Taylor 22209030e2 Move files all_ft4.txt and clockit.out to the data_dir directory. 2019-02-01 11:56:08 -05:00
Joe Taylor 98d665c678 Add subroutine clockit() and use it for profiling ft4_decode(). 2019-02-01 10:47:47 -05:00
Joe Taylor 9c2700128c Generation of FT4 Tx waveform from itone() moved to a separate subroutine. 2019-01-31 16:07:07 -05:00
Joe Taylor b32799d2b8 Add xdt to lines printed by ft4sim_mult. 2019-01-31 14:06:05 -05:00
Joe Taylor 04f085bb24 Proper handling of multiple decodes from one call to ft4_decode. 2019-01-31 13:55:21 -05:00
Joe Taylor a80b955fe7 Decode FT4 over the full frequency range displayed in waterfall. 2019-01-31 12:10:58 -05:00
Joe Taylor 0dd4577143 Merge branch 'feat-ft2' of bitbucket.org:k1jt/wsjtx into feat-ft2 2019-01-31 11:38:55 -05:00
Joe Taylor 7ae1210266 Fix several flaws in the waveforms generated by ft4sim_mult. 2019-01-31 11:37:54 -05:00
Steve Franke fdb84c0e63 Fix an off-by-one error. 2019-01-30 19:19:38 -06:00
Joe Taylor 9f909b6b1b Oops, I left garbage in the file. 2019-01-30 15:49:52 -05:00
Joe Taylor 1261434e84 Merge branch 'feat-ft2' of bitbucket.org:k1jt/wsjtx into feat-ft2 2019-01-30 15:37:38 -05:00
Joe Taylor 189f538dc0 Add ft4sim_mult, which is basically functional. 2019-01-30 15:33:47 -05:00
Steve Franke 66bb999126 Improve ft4_downsample filter. Improve getcandidates4. 2019-01-30 12:47:01 -06:00
Joe Taylor 3f7fb38e81 More code cleanup -- just comments and formatting. 2019-01-30 12:22:41 -05:00
Joe Taylor 2888c05eff Code cleanup. 2019-01-30 11:20:29 -05:00
Steve Franke e57df307dd Fix a comment. 2019-01-29 15:42:30 -06:00
Joe Taylor 7e3b153d8b Correct the estimate of SNR for FT4 signals. 2019-01-29 13:56:04 -05:00
Joe Taylor 0a6d67c1d6 Make the simulated data files slightly longer so that WSJT-X can decode them. 2019-01-29 13:55:04 -05:00
Joe Taylor e98231d4c1 Correct the call to genft4(); fix the displayed time for data from disk. 2019-01-29 10:39:34 -05:00
Steve Franke d3b1f7e560 Prevent some out-of-bounds problems. 2019-01-27 19:28:41 -06:00
Steve Franke 57cf69e6ad First cut at identifying multiple candidates for decoding. Needs work. 2019-01-27 19:19:47 -06:00
Steve Franke 613bfaf3ee Change ft4 to use (174,91) code and 512 Sa/symbol. 2019-01-26 23:03:54 -06:00
Steve Franke d9f4a27a3e Create ft4_decode.f90. Change stand-alone decoder ft4d.f90 to use ft4_decode.f90. 2019-01-26 11:42:07 -06:00
Steve Franke 9fa08d3838 Un-hardwire sync. 2019-01-25 16:06:45 -06:00
Steve Franke 66e3f11fba Add ft4 files in lib/ft4. 2019-01-25 16:01:34 -06:00