Olivares Poggi, César AugustoDe la Jara, César2020-01-302020-01-302019De la Jara, C. A. (2019).==$Ionospheric echoes detection in digital ionograms using convolutional neural networks$==(Trabajo de investigación para optar el grado de magíster en Ingeniería Informática con mención en Ciencias de la Computación). Pontificia Universidad Católica del Perú, Lima, Perú.http://hdl.handle.net/20.500.12816/4747An ionogram is a graph that shows the distance that a vertically transmitted wave, of a given frequency, travels before returning to the earth. The ionogram is shaped by making a trace of this distance, which is called virtual height, against the frequency of the transmitted wave. Along with the echoes of the ionosphere, ionograms usually contain a large amount of noise of different nature, that must be removed in order to extract useful information. In the present work, we propose to use a convolutional neural network model to improve the quality of the information obtained from digital ionograms, compared to that using image processing and machine learning techniques, in the generation of electronic density profiles. A data set of more than 900,000 ionograms from 5 ionospheric observation stations is available to use.application/pdfenginfo:eu-repo/semantics/openAccessNeural networksIonosphereData transmission systemsinfo:eu-repo/semantics/masterThesishttp://purl.org/pe-repo/ocde/ford#1.05.01