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5131 Commits

Author SHA1 Message Date
Steve Franke ec2d5b6233 Fix the sign of one of the Nuttal window coefficients. Change BT to 2.0. 2019-02-25 12:57:34 -06:00
Steve Franke 17ac99344c For now, change to BT=1.5 for FT8. This commit enables the waterfall analysis window. This decreases sidelobes significantly in exchange for increased noise bandwidth. Sensitivity to weak tones will be degraded somewhat. 2019-02-23 14:18:22 -06:00
Steve Franke 5d914a1eb1 Make ft8sim_gfsk work with recent changes to gen_ft8wave.f90. 2019-02-22 15:16:29 -06:00
Joe Taylor 25bfa3798a Transmit FT8 using a gaussian-filtered waveform. 2019-02-22 13:39:39 -05:00
Joe Taylor 574ad38400 Fix "Tune" operation in FT4 mode. 2019-02-22 11:29:57 -05:00
Steve Franke d9c99601ae Fix bugs in gen_ft8wave.f90. 2019-02-21 15:56:21 -06:00
Steve Franke 9425bd4d37 Merge branch 'feat-ft2' of bitbucket.org:k1jt/wsjtx into feat-ft2 2019-02-21 15:48:08 -06:00
Steve Franke 1acb5d5d99 Add routines needed to test FT8 with GFSK pulses. 2019-02-21 15:48:02 -06:00
Joe Taylor aeddaeab9e FT4 now transmits a waveform generated from Gaussian-filtered frequency changes. 2019-02-21 12:10:27 -05:00
Joe Taylor 57a20f838f Remove the code that builds an ADIF file from FoxQSO.txt. 2019-02-21 10:24:58 -05:00
Joe Taylor d5a1671210 FT4 decoding interval is now 288 ms. Saving of FT4 files is somewhat rationalized. 2019-02-21 10:08:18 -05:00
Joe Taylor f1e7b0c30a Add (temporary?) code for converting FoxQSO.txt to an ADIF log. 2019-02-20 10:43:30 -05:00
Joe Taylor f014fd2a7e Temporarily, at least, remove the default timestamps from qDebug() messages. 2019-02-20 10:41:55 -05:00
Joe Taylor a98e1d7f37 Minor code cleanup. 2019-02-15 09:55:27 -05:00
Joe Taylor 41c22b0153 Call fftwf_cleanup() from four2a to free all remaining fftw memory. 2019-02-15 09:38:28 -05:00
Joe Taylor 3c77b720f8 Account for buffer start time in ft4d. 2019-02-15 09:06:41 -05:00
Joe Taylor e5ea814bb9 Destroy FFTW plans when ft4d is finished. 2019-02-15 08:59:41 -05:00
Steve Franke 6c8a204d7e Make sure that message77 is initialized. 2019-02-14 18:54:14 -06:00
Steve Franke 473c7058ff Merge branch 'feat-ft2' of bitbucket.org:k1jt/wsjtx into feat-ft2 2019-02-14 17:37:48 -06:00
Steve Franke 6ad6d44ffa When doing block detection of symbols, fill in incomplete blocks using 
data from shorter block sizes.
 2019-02-14 17:34:46 -06:00
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