Mobile piezoelectric distrometer used to distinguishing between rain, graupel, and hail during scientific thunderstorm observation.
The signal digitalization is based on high-precision sdr-widget technology, which allows sophisticated signal processing.
Distrometer sensor is mounted in the standard TK PS 99-6-o 11040301 mounting box.
The DISTROMETER01 device uses hpsdr protocol of sdr-widget. Therefore the signal-piping-tools, are needed to read data from the sensor. The signal-piping-tools repository is included as submodule in this distrometer repository. Therefore it could be dowloaded by following commands from this repository.
git submodule init
git submodule update
After that the signal-piping-tools sources should be downloaded in "sw/signal-piping-tools"
cd sw/signal-piping-tools
Then proceed according to README.md in that directory. eg.
$ sudo apt-get install sox build-essential libusb-dev libusb-1.0-0-dev python-setuptools libcfitsio-dev buffer pv ntp libvolk2-dev
sudo apt-get install sox
The directory sw contains a submodule with required dependency signal-piping-tools, which needs to be build prior start of distrometer recording script. After that the recording could be start by.
./start.sh
There should be edited the 'station' variable in the script. The script automatically records five minutes long raw WAV files named by system time.
The wav files recorded by the scripts, could by displayed as spectrogram by pysdr-waterfall utility.
The USB device with ID fffe:0007 needs to be accesible by user using the scripts.
$ lsusb
Bus 001 Device 004: ID 1546:01a6 U-Blox AG
Bus 001 Device 003: ID fffe:0007
There is valid sdr-widget device on bus 001 and port number 003. Listing of devices on that bus shows it has correct acces rights crw-rw-rw- therefore is available for all users for read and write.
$ ls -la /dev/bus/usb/001/
total 0
drwxr-xr-x 2 root root 120 Jan 1 1970 .
drwxr-xr-x 4 root root 80 Jan 1 1970 ..
crw-rw-r-- 1 root root 189, 0 Feb 11 2016 001
crw-rw-r-- 1 root root 189, 1 Feb 11 2016 002
crw-rw-rw- 1 root root 189, 2 Dec 28 09:53 003
crw-rw-r-- 1 root root 189, 3 Feb 11 2016 004