# CygnusRFI: An open-source RFI analysis tool for Ground Stations & Radio Telescopes
This is a port of CygnusRFI from Python 2 to Python 3.

![RF Plot](img/example-rfi_plot.png)


# Setup
Install dependencies.

```
sudo apt install --no-install-recommends python3-pip python3-virtualenv	\
	gnuradio gr-osmosdr
```

Install CygnusRFI fork.

```
git clone https://spacecruft.org/spacecruft/CygnusRFI.git
cd CygnusRFI/
virtualenv -p python3 env
source env/bin/activate
pip install --upgrade pip
pip install -r requirements.txt
```


# Use
Example:

```
export PYTHONPATH=/usr/lib/python3/dist-packages:/usr/lib/python3/site-packages:$PYTHONPATH

python CygnusRFI.py -b 2400000 -c 2048 -t 0.5 -d 5 -f 400000000 -F 430000000
```

See example output: `README-example.md`.


# Help
Help output.

```
$ python CygnusRFI.py -h
usage: CygnusRFI.py [-h] -b BANDWIDTH [-c CHANNELS] [-t T_INT] -d DURATION -f FMIN -F FMAX

options:
  -h, --help            show this help message and exit
  -b BANDWIDTH, --bandwidth BANDWIDTH
  -c CHANNELS, --channels CHANNELS
  -t T_INT, --t_int T_INT
  -d DURATION, --duration DURATION
  -f FMIN, --fmin FMIN
  -F FMAX, --fmax FMAX
```


# Upstream
See `README-upstream.md`

https://github.com/0xCoto/CygnusRFI

**CygnusRFI** was created by **[Apostolos Spanakis-Misirlis](https://www.github.com/0xCoto/)**.

**Contact:** [0xcoto@protonmail.com](mailto:0xcoto@protonmail.com)


See also forum thread:

* https://community.libre.space/t/cygnusrfi-an-open-source-rfi-analysis-tool-for-ground-stations-radio-telescopes/5553


# Status
It appears to be working, but has been minimally tested.

Tested on Raspberry Pi 4 with Debian stable (11/bullseye).

Using Nooelec Smartee SDR:
```
Bus 001 Device 003: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
```


# Copyright
Upstream sources under their respective copyrights.

License, same as upstream: GPLv3.

*Copyright © 2023, Jeff Moe.*