pabr-leansdr/README.md

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2016-09-02 21:43:09 +00:00
leansdr: Lightweight, portable software-defined radio.
Copyright (C) 2016 <pabr@pabr.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
**leansdr** consists of:
* A simple data-flow framework for signal processing
* A library of software-defined radio functions
* Applications built on top of the above.
Currently the main application is **leandvb**.
# leandvb
**leandvb** is a DVB-S demodulator designed for speed rather
than sensitivity. See http://www.pabr.org/radio/leandvb .
## Quick start guide
```
git clone http://github.com/pabr/leansdr.git
cd leansdr/src/apps
make
```
### Receiving DATV transmissions from the ISS with a RTL-SDR dongle:
```
rtl_sdr -f $DOWNCONVERTED_FREQ -s 2400000 capture.iq
./leandvb -f 2400e3 --sr 2000e3 --cr 1/2 < /tmp/capture.iq > /tmp/capture.ts
mplayer capture.ts
```
### Troubleshooting
```
./leandvb_gui --gui -v -d -f 2400e3 --sr 2000e3 --cr 1/2 < /tmp/capture.iq > /tmp/capture.ts
```
#### Live receiver with auto-detection of symbol rate and code rate:
```
rtl_sdr -f $DOWNCONVERTED_FREQ -s 2400000 - | ./leansdrscan -v ./leandvb_gui --gui -f 2400e3 --sr 2000e3,1000e3,500e3,250e3 --cr 1/2,2/3,3/4,5/6,7/8 - | mplayer -cache 128 -
```