| Issue |
E3S Web Conf.
Volume 62, 2018
IX International Conference “Solar-Terrestrial Relations and Physics of Earthquake Precursors”
|
|
|---|---|---|
| Article Number | 02012 | |
| Number of page(s) | 13 | |
| Section | Geophysical Fields and their Interactions | |
| DOI | https://doi.org/10.1051/e3sconf/20186202012 | |
| Published online | 07 November 2018 | |
Modernization of adaptive matching pursuit method to analyze geophysical signals of pulse nature
Institute of Cosmophysical Research and Radio Wave Propagation Far Eastern Branch of the Russian Academy of Science, Laboratory of Acoustic Research, 684034 Kamchatskiy krai, Elizovo regoin, Paratunka, Mirnaya st., 7, Russia
* Corresponding author: o.o.lukovenkova@yandex.ru
The paper is devoted to the development and comparison of different numerical methods which increase the adaptive property and improve the accuracy of matching pursuit algorithm in connection to geoacoustic and electromagnetic signals. At each step of adaptive matching pursuit, a function is chosen which has the highest correlation with an initial signal. Then parameters of a chosen function are refined. The refinement is performed by the help of different grid methods and methods based on gradient direction search. The paper considers the peculiarities of application of sparse approximation methods to geophysical signals of pulse nature and compares different variants of modification of adaptive matching pursuit algorithm.
© The Authors, published by EDP Sciences, 2018
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