Commit Graph

83 Commits

Author SHA1 Message Date
Manolis Surligas 5aae0a1b49 Add block for parsing the FOX slow speed telemetry frames 2018-03-24 21:43:19 +02:00
Manolis Surligas 02801c9a3f Improve 8b10b decoder performance and add the CCSDS RS decoder 2018-03-24 21:43:18 +02:00
Thanos Gkiolias 699acdf53e Complete 8b10b decoder
*Export data bytes and erasures in message port
2018-03-24 21:43:18 +02:00
Nikos Karamolegkos c2d20fbead Introduce 8b10b Decoder 2018-03-24 21:43:18 +02:00
Manolis Surligas c1677c8104 Change the quadrature demod filter to sync block
Seems that there is a probleb with general blocks and the history, so
the filter cannot act as valve. However, it produces zeros, in the
presence of noise.
2018-03-24 21:43:18 +02:00
Manolis Surligas 0d5b295969 Add a quadrature demod filter
This is an attempt to cut the signal free period after the quadrature
demodulation block. The idea seems that works, but there still an issue
with the samples not passing correctly from the valve.
2018-03-24 21:43:18 +02:00
Manolis Surligas 2fb1bfadfc Fix AX.25 encoder/decoder
* Force the left over scrambled bits into the LFSR to be transmitted
* Refactor the decoding process
2018-03-20 20:40:13 +02:00
Manolis Surligas 14ad8ad879 Fix NOAA issue caused by bad GRC regeneration 2018-02-24 00:19:40 +02:00
Manolis Surligas 0287bc6657 Remove obsolete match filtering block 2018-02-02 22:39:49 +02:00
George Vardakis eabd2c89f2 Remove split option and increase height size in APT sink block 2018-02-02 18:07:21 +02:00
Nikos Karamolegkos 12a2aa0090 Add minimum frame length on the morse decoder 2018-02-01 21:59:45 +02:00
Manolis Surligas de05c3f1c4 Several minor improvements
* Improve CI testing
* Fix compilation warnings
* Bump up version
2018-01-21 22:23:22 +02:00
Manolis Surligas 2de1d91fae Improve the CW decoder flowgraph 2017-11-01 22:04:56 +02:00
Manolis Surligas 5d7af423a8 Window number to dot duration should be sufficient enough 2017-11-01 22:04:56 +02:00
Manolis Surligas 52efa4c8bd Finish the CW encoder
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
Manolis Surligas 9b9f8c92ad Simpify CW decoder 2017-11-01 22:04:56 +02:00
Manolis Surligas 5d9fc19e3b Simplify CW decoding 2017-11-01 22:04:56 +02:00
Manolis Surligas ca1b8b1242 Output messages in text files
* 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
Manolis Surligas e114eb0cd0 Remove CW matched filter block
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
Manolis Surligas 7b8ef57d37 Add FSK9600 AX.25 decoder 2017-09-20 17:54:02 +03:00
Kostis Triantayllakis cce9f3d981 Introduce IQ sink block 2017-08-08 17:00:12 +03:00
Nikos Karamolegkos bca58383b7 Add sink block for saving the frame to file
Supported file types txt, bin, hex
2017-07-30 13:25:55 +03:00
George Vardakis 162b435d74 Fix synchronization bug 2017-07-19 20:34:58 +03:00
Manolis Surligas f1ff356193 Support fixed packet length frames on the FSK decoder 2017-04-15 02:41:47 +03:00
Manolis Surligas a8d0eae736 Add support for arbitraty descrambling polynomials on the FSK receiver 2017-04-15 01:23:47 +03:00
George Vardakis bb2401356a Add option for rotating image 2017-04-10 18:03:00 +03:00
George Vardakis d4fbd62c03 Remove output of byte file 2017-04-10 15:23:19 +03:00
George Vardakis 401e8f5248 Add documentation and synchronization option 2017-04-10 00:19:57 +03:00
George Vardakis 3b30b6b78e Add split image functionality 2017-04-09 17:20:02 +03:00
George Vardakis d76264adeb Implement NOAA sink block 2017-04-08 21:56:44 +03:00
Manolis Surligas 165423d64c Ogg source (#70)
* 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
Manolis Surligas 11063b61f2 Fix OGG encoder issues 2017-02-03 01:24:10 +02:00
George Vardakis 639c372a22 Implement ogg encoder block 2017-02-02 21:05:02 +02:00
Manolis Surligas 50098ee879 Dev (#53)
* 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
Manolis Surligas f320d841ab Add supoort to the rigctl message source to work as client
Start also the LEO channelizer. It is not yet functional.
2016-10-22 19:34:09 +03:00
Manolis Surligas 33a27566c8 Improve build system and installation documentation (#33)
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
Manolis Surligas 6e3d8f9c10 Remove unnecessary block 2016-08-26 19:50:20 +03:00
Manolis Surligas 5056189d5e Improve the performance of AX.25 decoder
* 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
Manolis Surligas a92eb283ff Add the QB50 deframer block
The block is able to separate WOD AX.25 frames from normal ones.
2016-07-27 17:38:49 +03:00
Manolis Surligas 1c30dfe145 Add AX.25 decoder with legacy support for the hardware radios 2016-07-02 00:18:44 +03:00
Manolis Surligas ddb6ce050f Merge branch 'next' of https://github.com/satnogs/gr-satnogs into next
# Conflicts:
#	lib/upsat_fsk_frame_encoder_impl.cc
2016-06-30 23:44:05 +03:00
Manolis Surligas 92843c43c9 Add AX.25 encoder that supports the legacy hardware radios
The new encoder now supports NRZI and G3RUH scrambling that makes it
compatible with most of the FSK9600 modems.

Remove also some unneeded blocks.
2016-06-30 23:39:16 +03:00
Manolis Surligas a22d37e961 Improve and make more generic the whitening mechanism
* The AX.25 framing now supports whitening.
* Change again the AFSK flowgraph.
2016-06-22 15:37:27 +03:00
Manolis Surligas 6ed86dbae5 Add new debug message source that can accept raw bytes 2016-06-02 17:06:40 +03:00
George Vardakis 455e19e466 Added hex and binary output sink 2016-05-13 15:57:33 +03:00
Manolis Surligas c28c82c873 Add coarse doppler shift correction block 2016-05-11 21:17:58 +03:00
Manolis Surligas fcc5452b5b Fix small bug at the AX.25 decoder 2016-04-29 22:58:56 +03:00
Manolis Surligas e79e98fbd8 AX.25 support at the UPSAT FSK encoder/decoder 2016-04-29 21:43:09 +03:00
Manolis Surligas 652c257b01 Add UDP PMT message sink block 2016-04-29 02:21:00 +03:00
Manolis Surligas 382e5a615b Start the AX.25 integration into UPSAT FSK framing 2016-04-26 22:21:42 +03:00