ADWRK 1.0 — Computer Program for Dispersion Analysis of Whistler Waves has been created

ADWRK 1.0 is a computer program developed to study the dispersion characteristics of low-frequency electromagnetic waves known as whistlers.

Authors: Ludmila Sergeevna Marchenko, Leading Specialist at IKIR FEB RAS Scientific Secretariat and Roman Ivanovich Parovik, Dr. of Sci. (Phys.-Math.), Leading Researcher at Laboratory of Physical Processes Modeling, IKIR FEB RAS

Input Data: The input file format required by the program is an audio file with the extension wav.

Functionality: Upon loading the audio file, the program generates a spectrogram and extracts the amplitude component of the signal. Users can select specific time intervals within the sound file and choose frequency bands for analyzing whistlers.

The software implements threshold filtering and clustering algorithms to isolate the trace of a whistler from its spectrogram. By transforming coordinates, the whistler's trace is straightened out, allowing construction of a linear regression equation. The slope angle provides an estimate of the wave’s dispersion coefficient. The final output includes this dispersion coefficient value.

Additionally, users have the option to save calculations in text files along with corresponding graphs.

Development Context: This computer program was created under State Assignment No. 124012300245-2 of IKIR FEB RAS.