sebastian
/
gr-satnogs
mirror of https://gitlab.com/LongHairedHacker/gr-satnogs.git
1
0
Fork 0
Code Issues Releases Wiki Activity
SatNOGS GNU Radio Out-Of-Tree Module
327 Commits 4 Branches 3 Tags 3.4 MiB
C++ 51.1%
C 20.8%
Python 17.2%
Assembly 4.6%
CMake 4%
Other 2.3%
Go to file
Patrick Dohmen e831d81502 Fix NOAA APT waterfall bandwidth 
The flowgraph for decoding NOAA APT images generates a waterfall with a
bandwidth depending on the default samplerate of the SDR hardware.
USRPB200 defaults to 500 ksps, which produces an output of 125 ksps
after the "first_stage_decimation" which is fixed to a value of 4.
Changing the hardware to an "rtlsdr" also changes the default
samplerate to 1 Msps which results in a waterfall bandwidth of 250 kHz
(+- 125 kHz). Connecting the waterfall sink behind the FFT Filter,
which has a decimation set to match an output samplerate of 125 kHz,
seems to be correct! This produces waterfalls with a bandwidth of
125 kHz (+- 62,5 kHz).

Fixes issue #128
 		2018-07-18 12:24:16 +03:00
apps Fix NOAA APT waterfall bandwidth 2018-07-18 12:24:16 +03:00
cmake Add libfec as external project 2018-03-24 21:43:18 +02:00
docs Several minor improvements 2018-01-21 22:23:22 +02:00
examples Remove obsolete examples 2018-03-20 20:40:13 +02:00
grc Add block for parsing the FOX slow speed telemetry frames 2018-03-24 21:43:19 +02:00
include/satnogs Use AX.25 address field to reduce false alarms 2018-03-24 23:59:56 +02:00
lib Fix 1/0 correlation between sync_a pattern and sample history in noaa_apt_sink_impl.cc 2018-07-18 12:22:15 +03:00
libfec Add libfec as external project 2018-03-24 21:43:18 +02:00
python Bump up version to 1.2.6 2018-02-24 00:26:46 +02:00
swig Add block for parsing the FOX slow speed telemetry frames 2018-03-24 21:43:19 +02:00
.gitignore Add a generic clear text message sink. 2016-01-24 21:43:17 +02:00
.gitlab-ci.yml Several minor improvements 2018-01-21 22:23:22 +02:00
CMakeLists.txt Bump up version 2018-07-18 12:17:29 +03:00
LICENSE Update and rename LICENSE.md to LICENSE 2016-01-07 18:52:51 +02:00
MANIFEST.md Create the README and the OOT module structure. 2016-01-07 21:24:51 +02:00
README.md Add flowgraph for the FOX DUV decoder and update README 2018-03-24 21:43:18 +02:00

README.md

gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module

gr-satnogs is an out-of-tree GNU Radio module that provides all the necessary tools for decoding signals from various scientific and academic sattelites.

Install

Requirements

  • GNU Radio ( > 3.7.7 )
  • CMake ( > 3.1)
  • G++ (with C++11 support)
  • VOLK
  • libogg
  • libvorbis
  • libpng
  • libpng++
  • git

Optional

  • gr-osmocom (for using the flowgraphs with real SDR hardware)
  • libnova (for building the debug blocks)
  • libfec (it will automatically installed if not present)

Installation

  1. git clone https://gitlab.com/librespacefoundation/satnogs/gr-satnogs.git
  2. cd gr-satnogs
  3. mkdir build
  4. cmake ..
  5. make
  6. sudo make install

If this is the first time you are building the gr-satnogs module run sudo ldconfig

Advanced

By default, the SatNOGS module will use the default installation prefix. This highly depends on the Linux distribution. You can use the CMAKE_INSTALL_PREFIX variable to alter the default installation path. E.g:

cmake -DCMAKE_INSTALL_PREFIX=/usr ..

Also, by default the build system enables a set of blocks used for debugging during the development. The enable/disable switch is controled through the INCLUDE_DEBUG_BLOCKS boolean variable. If for example, you want to disable the debugging blocks, the CMake command would be:

cmake -DINCLUDE_DEBUG_BLOCKS=OFF ..

Another common control option is the library sugffix of the Linux distribution. There are distributions like Fedora, openSUSE, e.t.c that the their 64-bit version use the lib64 folder to store the 64-bit versions of their dynamic libraries. On the other hand, distributions like Ubuntu do the exact opposite. They use lib directory for the libraries of the native architecture and place the 32-bit versions on the lib32 directory. In any case the correct library directory suffix can be specified with the LIB_SUFFIX variable. For example:

cmake -DLIB_SUFFIX=64 -DCMAKE_INSTALL_PREFIX=/usr -DINCLUDE_DEBUG_BLOCKS=OFF ..

will install the libraries at the /usr/lib64 directory.

Website

For more indormation about SatNOGS please visit our site.

License

© 2016,2017,2018 Libre Space Foundation.

Licensed under the GPLv3.