Joe Taylor
c3d8e4dd73
Working on QRA65, including simulator and test program.
2020-09-26 16:49:06 -04:00
Joe Taylor
acd6253373
A few more fixups for QRA65. Not finished, yet!
2020-09-25 15:38:20 -04:00
Joe Taylor
443aee5355
Restore AGC action in sync_qra65().
2020-09-25 13:31:43 -04:00
Joe Taylor
7fd2f1afe6
Change QRA66 to QRA65, on the C++ side.
2020-09-25 13:20:46 -04:00
Joe Taylor
6ebc700288
Mostly(?) changed QRA66 to QRA65 on the Fortran side.
2020-09-25 12:21:57 -04:00
Joe Taylor
2057600f43
First functioning QRA65 encode and decode.
2020-09-25 10:55:21 -04:00
Joe Taylor
8e69f84bdd
Remove some obsolete, commented-out code. No real cghanges!
2020-09-11 18:39:24 -04:00
Bill Somerville
5fdcd8c15a
Merge branch 'develop' into feat-fst280
2020-09-11 20:06:20 +01:00
Steven Franke
71fdcd1119
Silence a compiler warning.
2020-09-10 16:11:07 -05:00
Steven Franke
2dcde590df
Use widegraph limits for noise baseline fit. Limit signal search to within the widegraph limits.
2020-09-10 14:58:10 -05:00
Joe Taylor
47fcddcb50
Send nfa, nfb to fst4_decode().
2020-09-10 14:59:52 -04:00
Joe Taylor
01a1688b32
FST4 and FST4W decoder: get freq range from nfqso and ntol; remove BCD submodes, i.e. hmod=2, 4, 8.
2020-09-05 13:14:40 -04:00
Joe Taylor
f24d15b16e
Eliminate the FST4/FST4W submodes with hmod > 1.
2020-09-04 15:15:30 -04:00
K9AN
f066936043
Remove an unused variable from fst4_decode
2020-08-29 19:55:23 +01:00
Steven Franke
5ca81a6507
Use 3rd order polynomial fit to estimate the noise baseline. The
...
polynomial fit is done over 400 Hz bandwidth for T/R periods longer
than 15s, and over approx. 600 Hz (10 times the signal bandwidth) for
T/R period of 15s.
2020-08-29 19:55:23 +01:00
Steven Franke
d82b9f5b0e
Speed up decoder by eliminating some complex multiples in sequence detection loop. Add timer calls for doppler spread calculation and sequence detection loop.
2020-08-29 19:55:22 +01:00
Steven Franke
ecaca6af9f
Fix argument list in call to fet_fst4_bitmetrics.f90
2020-08-29 19:55:22 +01:00
Steven Franke
b9328b96c9
Tweaks to update the diagnostics that are written to fort.21.
2020-08-29 19:55:22 +01:00
Steven Franke
e02850ae5a
Streamline fst4_decode. Add timer for downsampling.
2020-08-29 19:55:22 +01:00
Steven Franke
782c779392
Reconfigure to optimize decoder for MF/LF (high coherence) channels.
2020-08-29 19:55:21 +01:00
Steven Franke
7cb5511ed0
Simplify some code in fst4_decode.f90 - no functional change.
2020-08-29 19:55:21 +01:00
Steven Franke
bf06193c10
Add timer call for bit metric calculation. Improve some comments. Make fort.21 ntype parameter more informative.
2020-08-29 19:54:38 +01:00
Steven Franke
6838a6b484
Remove some unneeded code.
2020-08-29 19:50:32 +01:00
Steven Franke
8b7db6556c
Changes to the llrs that are used as the basis for AP decoding.
2020-08-29 19:50:17 +01:00
Steven Franke
b191e0c5ef
Fix SNR calculation for B,C,D submodes.
2020-08-29 19:49:59 +01:00
Steven Franke
9d2bde7180
Fix SNR calculation for B,C,D submodes.
2020-08-29 19:49:46 +01:00
Steven Franke
cdbe425e56
Use squared metric for fst4 - works better on fading channel.
2020-08-29 19:49:23 +01:00
Steven Franke
37e05f6074
Set unpk77_success=.false. for messages with i3=0 and n3>6.
2020-08-29 19:48:54 +01:00
K9AN
8159478d51
Remove an unused variable from fst4_decode
2020-08-28 12:25:17 -05:00
Steven Franke
e232c32178
Use 3rd order polynomial fit to estimate the noise baseline. The
...
polynomial fit is done over 400 Hz bandwidth for T/R periods longer
than 15s, and over approx. 600 Hz (10 times the signal bandwidth) for
T/R period of 15s.
2020-08-28 09:22:22 -05:00
Steven Franke
ad0540a027
Speed up decoder by eliminating some complex multiples in sequence detection loop. Add timer calls for doppler spread calculation and sequence detection loop.
2020-08-24 10:17:45 -05:00
Steven Franke
e3171d2142
Fix argument list in call to fet_fst4_bitmetrics.f90
2020-08-22 09:42:34 -05:00
Steven Franke
091d6d0b1a
Tweaks to update the diagnostics that are written to fort.21.
2020-08-21 09:18:59 -05:00
Steven Franke
0e0349e87a
Streamline fst4_decode. Add timer for downsampling.
2020-08-20 09:48:32 -05:00
Steven Franke
e28215fce5
Reconfigure to optimize decoder for MF/LF (high coherence) channels.
2020-08-19 14:10:28 -05:00
Steven Franke
07486ee0c7
Simplify some code in fst4_decode.f90 - no functional change.
2020-08-19 09:20:48 -05:00
Steven Franke
2c0462f9aa
Merge branch 'feat-fst280' of bitbucket.org:k1jt/wsjtx into feat-fst280
2020-08-17 14:12:13 -05:00
Steven Franke
683cd08103
Add timer call for bit metric calculation. Improve some comments. Make fort.21 ntype parameter more informative.
2020-08-17 14:12:08 -05:00
Bill Somerville
4a2a181528
Merge branch 'develop' into feat-fst280
2020-08-17 18:33:00 +01:00
Joe Taylor
42626009b5
TEMPORARY: Diagnostic routine for the "Save All" missing files problem.
2020-08-09 14:21:25 -04:00
Joe Taylor
84e53960cd
QRA66 now works up for submodes A-D up to 300 s periods. Submode E presently NG.
2020-08-09 11:04:49 -04:00
Joe Taylor
de0476bf3c
More changes to allow longer sequences in QRA66 mode.
2020-08-08 16:53:28 -04:00
Joe Taylor
e4fad77fa5
QRA66 now works with qra66sim and jt9 and TR periods 15 30 60 120 300 s.
2020-08-08 13:57:24 -04:00
Joe Taylor
bf38f4416c
Modifications to give QRA64 use of longer TR periods and tone-spacing submodes. Noy yet finished, or tested!
2020-08-08 09:14:12 -04:00
Joe Taylor
2de2874672
Allow for larger irc created by message averaging. Commit test_qra66.f90
2020-08-06 14:23:39 -04:00
Joe Taylor
254e2f61fa
Remove diagnostic write to fort.71.
2020-08-06 07:07:16 -04:00
Joe Taylor
30e34bf1c4
Implement message averaging (very basic) for QRA66.
2020-08-05 16:34:49 -04:00
Joe Taylor
6c8c9183aa
SNR for QRA66 non-decodes now set to -25.
2020-08-05 11:16:56 -04:00
Joe Taylor
7256d70016
QRA66: change NSPS from 1920 to 1800. TxT=85*1800/12000=12.75 s.
2020-08-05 11:06:18 -04:00
Joe Taylor
f1c8f04136
Report failed QRA66 decode as SNR = -22 dB.
2020-08-04 14:18:23 -04:00
