2de1d91fae
Improve the CW decoder flowgraph
2017-11-01 22:04:56 +02:00
5d7af423a8
Window number to dot duration should be sufficient enough
2017-11-01 22:04:56 +02:00
f560f16af3
Improve CW decoding process
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Our approach exploits the autocorrelation properties of the CW signal.
Thus low, high or band pass filtering greatly affects the performance of
the algorithm, because they introduce autocorrelation.
2017-11-01 22:04:56 +02:00
52efa4c8bd
Finish the CW encoder
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The CW encoder is a debug block that can be used to check the
performance of the CW decoder of gr-satnogs module under different RF
conditions. It can also serve as a perfect debug tool for sattelite
missions.
2017-11-01 22:04:56 +02:00
8d34e937ee
Continue with the CW encoder
2017-11-01 22:04:56 +02:00
9b9f8c92ad
Simpify CW decoder
2017-11-01 22:04:56 +02:00
94eef1463c
Improve CW decoding performance and complexity
2017-11-01 22:04:56 +02:00
5d9fc19e3b
Simplify CW decoding
2017-11-01 22:04:56 +02:00
ea5a5632f5
Add CW decoder
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* Filtering and decimation stages tested for USRP
* TODO: Test filtering for the rest of the SDR devices
2017-11-01 22:04:56 +02:00
ca1b8b1242
Output messages in text files
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* Add support for saving the messages on a text file
* Add timestamp support for each message in ISO 8601 format
2017-11-01 22:04:56 +02:00
e114eb0cd0
Remove CW matched filter block
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CW decoding using match filtering is pretty much useless in LEO.
The information about the tone frequency is very rare and carrier
oscillations during the satellite pass reduce significantly the
performance.
The new next CW decoder is based on the autocorrelation of the received
signal.
2017-11-01 22:04:56 +02:00
7b8ef57d37
Add FSK9600 AX.25 decoder
2017-09-20 17:54:02 +03:00
62cdbf7e51
NOAA sink fix
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* Remove completely the .png extension. satnogs-client will handle the
rest.
* Fix enumeration on the NOAA sink xml
2017-09-20 17:18:59 +03:00
2bac7e1f32
Change NOAA output naming scheme
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NOAA APT decoder will create a file without a timestamp. The
satnogs-client will be resposible to append the proper timestamp.
This change was necessary to avoid the time offset between the start of
the observation timestamp that the APT decoder appends to the filename
and the end of the observation that the client takes into account.
2017-09-19 14:11:45 +03:00
36e3aa66a6
Change filename on noaa to match new satnogs-client naming
2017-08-09 20:02:19 +03:00
cce9f3d981
Introduce IQ sink block
2017-08-08 17:00:12 +03:00
071e16b08d
Merge pull request #101 from GVardakis/noaa_sync_fix
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Fix NOAA APT Sink synchronization issue
2017-08-04 19:11:45 +03:00
53e1b326d8
Fix NOAA APT Sink synchronization issue
2017-08-04 16:29:53 +03:00
813d6b9f74
Fix bug with the name of file
2017-08-03 12:39:38 +03:00
fe1b612010
Fix bug with gcc<5 and minor changes to filenames
2017-08-02 18:06:21 +03:00
bca58383b7
Add sink block for saving the frame to file
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Supported file types txt, bin, hex
2017-07-30 13:25:55 +03:00
deb0c57c91
Fix memory leak
2017-07-21 20:49:44 +03:00
162b435d74
Fix synchronization bug
2017-07-19 20:34:58 +03:00
bb40020207
Fix gr-digital dependency
2017-05-23 22:58:33 +02:00
69408578e2
Fix NOAA png filename issue
2017-05-15 17:56:14 +03:00
f1ff356193
Support fixed packet length frames on the FSK decoder
2017-04-15 02:41:47 +03:00
a8d0eae736
Add support for arbitraty descrambling polynomials on the FSK receiver
2017-04-15 01:23:47 +03:00
be9f1212be
Fix possible bug in FSK decoder
2017-04-11 11:43:35 +03:00
bb2401356a
Add option for rotating image
2017-04-10 18:03:00 +03:00
d4fbd62c03
Remove output of byte file
2017-04-10 15:23:19 +03:00
401e8f5248
Add documentation and synchronization option
2017-04-10 00:19:57 +03:00
3b30b6b78e
Add split image functionality
2017-04-09 17:20:02 +03:00
d76264adeb
Implement NOAA sink block
2017-04-08 21:56:44 +03:00
165423d64c
Ogg source ( #70 )
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* Start Ogg source block
* Add OGG audio source block
The number of output streams for this block should match the number of
audio streams contained inside the ogg file. If there is a mismatch an
appropriate exception is thrown.
2017-04-01 16:21:15 +03:00
c83e53f9b5
Dev ( #67 )
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* Fix UPSat QT parameters
* Fix missing library versioning on CMake
* Fix segfault on the rigctl message source block destruction
2017-03-23 03:22:08 +02:00
d95b903097
Fix missing break statement
2017-02-03 19:25:53 +02:00
11063b61f2
Fix OGG encoder issues
2017-02-03 01:24:10 +02:00
639c372a22
Implement ogg encoder block
2017-02-02 21:05:02 +02:00
50098ee879
Dev ( #53 )
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* UDP Message source can handle multiple data types
* Add a waterfall sink block
* Fix dependency issues with VOLK
* Add mean and max hold mode to the waterfall sink
* Add mean and max hold mode to the waterfall sink
* Install satnogs_waterfall.gp gnuplot script at
<install_prefix>/share/satnogs/scripts
* Automatically retrieve x and y axis ranges at the satnogs_waterfall.gp
2017-01-22 19:33:36 +02:00
32b853134a
Fix Doppler shift direction ( #43 )
2016-11-22 11:49:42 +02:00
f320d841ab
Add supoort to the rigctl message source to work as client
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Start also the LEO channelizer. It is not yet functional.
2016-10-22 19:34:09 +03:00
33a27566c8
Improve build system and installation documentation ( #33 )
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The build systen now allows to enable/disable the blocks of the OOT
module that are used for development and debugging purposes.
2016-10-12 02:45:21 +03:00
63863b5ac1
Rpi ( #32 )
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* Fix compilation on Raspbian
* Add rtl-sdr dongle to the RX HW database
2016-10-11 19:39:37 +03:00
6e3d8f9c10
Remove unnecessary block
2016-08-26 19:50:20 +03:00
5056189d5e
Improve the performance of AX.25 decoder
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* Decrease false frame detection alarms that can reduce the number of
succesfully decoded frames
* Fix and improve the AX.25 bit stuffing mechanism
2016-08-07 02:11:59 +03:00
a92eb283ff
Add the QB50 deframer block
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The block is able to separate WOD AX.25 frames from normal ones.
2016-07-27 17:38:49 +03:00
6d4d51b825
Fix bug at AX.25 bit stuffing on the decoder
2016-07-07 17:57:06 +03:00
ee26a102bd
Small improvements
2016-07-02 23:01:17 +03:00
1c30dfe145
Add AX.25 decoder with legacy support for the hardware radios
2016-07-02 00:18:44 +03:00
ddb6ce050f
Merge branch 'next' of https://github.com/satnogs/gr-satnogs into next
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# Conflicts:
# lib/upsat_fsk_frame_encoder_impl.cc
2016-06-30 23:44:05 +03:00
Manolis Surligas
George Vardakis
Kostis Triantayllakis
Manolis Surligas
Nikos Karamolegkos
Alexandru Csete