This is a python script I wrote to replace (or at least add an alternative) to the old bin2fil written in node. Thanks to the highly efficient numpy/scipy C backends this program can convert much faster than the old one.
To run this script you must have python (note this is only tested with python3) installed with numpy and scipy libraries. You can install these dependencied by
pip install numpy
pip install scipy
then you can clone the repository on to your PC
git clone https://github.com/gio54321/bin2fil.git
As shown in the help output:
$python bin2fil.py -h
usage: bin2fil.py [-h] [-s] [-l] [-mjd] [-fh] [-fl] [-a] [-c] [-sr] [-f] [-n]
[-ra] [-de] [-e] [-o] [-cs]
input_file
description: bin2fil tool rewritten in python
positional arguments:
input_file input bin file
optional arguments:
-h, --help show this help message and exit
-s , --start offset in seconds to start the conversion
-l , --length length of the conversion in seconds (default is until
EOF)
-mjd , --mjd-start MJD start time (default is taken from creation time of
the input file)
-fh , --filt-high frequency of the highpass filter in Hz
-fl , --filt-low frequency of the lowpass filter in Hz
-a , --ampli amplification during conversion
-c , --channels number of channels
-sr , --sample-rate sample rate
-f , --center-freq center frequency
-n , --source-name source name
-ra , --source-ra source radial ascension
-de , --source-de source declination
-e , --sr-error error in ppm of the dongle
-o , --output-file output file name (default is replaced only the
extension)
-cs , --chunk-size size of the chunks that are elaborated
so the most basic command you can run is
python bin2fil.py file.bin
Take in consideration that if not specified the program will always take the default values. See below if you want to change these default values.
At the beginning of the file there are some global variables you have to modify if you want to run the script without always specify all the parameters. These variables are pretty self-explainatory and are correspondents to the CLI arguments.
# -------------- GLOBAL DEFAULTS VATIABLES ---------------
conv_start = 0
conv_len = 7200
ampli = 3.0
sample_rate = 1000
f_h = 0.1
f_l = 60.0
channels = 25
center_freq = 415
sr_error = 3.0
mjd_time = -1 # -1 means take from modify date
source_name = 'B0329+54'
source_ra = 33259.37
source_de = 543443.57
chunk_size = 50000 # I think this is the best but feel free to experiment
# --------------------------------------------------------- Implement Ampli control and saturation percentage display
- Implement some kind of graph of the channels (not strictly necessary)