Abstract
Algorithms for the suppression of noise and detection of a pulse signal in both time and spectral areas stipulate the use of an analog-to-digital converter with a high resolution, allowing us to cover the dynamic range the signal and noise. The system operation is demonstrated by the example of recording natural electromagnetic signals excited in a space between the Earth and ionosphere in urban conditions in the extremely low frequency range (Schumann resonances).
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Shvets, A.V., Ivanov, V.K. & Varavin, A.V. A Mobile Multichannel System for the Automatic Low-Frequency Signal Acquisition and Analysis in the Presence of High-Power Power-Main Noises. Instruments and Experimental Techniques 46, 351–356 (2003). https://doi.org/10.1023/A:1024462304875
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DOI: https://doi.org/10.1023/A:1024462304875