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scopus(9)
Evaluation of automatic cloud removal method for high elevation areas in Landsat 8 OLI images to improve environmental indexes computation
Conference ObjectAbstract: Thin clouds in the optical remote sensing data are frequent and in most of the cases don't allow toPalabras claves:Cirrus Band, Landsat, NDVI, QUITO, Remove CloudAutores:Alfonso R. Tierra, César Iván Alvarez-Mendoza, Teodoro A.C.Fuentes:scopusDifferential corrections by NTRIP to mobile devices with android application
ArticleAbstract: Real time GPS positioning is obtained by means of differential corrections sent from a base stationPalabras claves:android, Differential Correction, GPS, NTRIPAutores:Alfonso R. Tierra, César A. Leiva, Oscar SilvaFuentes:scopusNonlinear and discontinuities modeling of time series using artificial neural network with radial basis function
ArticleAbstract: At present, the Global Navigation Satellite System (GNSS) is used to obtain one Geodetic Reference SPalabras claves:Discontinuity, Gap, GPS, Nonlinear, Radial basis function network, TIME SERIESAutores:Alfonso R. TierraFuentes:scopusPerformance evaluation of artificial neural networks for planimetric coordinate transformation—a case study, Ghana
ArticleAbstract: Two national horizontal geodetic datums, namely, the Accra and Leigon datum, have been the only avaiPalabras claves:Backpropagation neural network, Four-parameter model, Geodetic datum, Radial basis function neural network, Six-parameter modelAutores:Alfonso R. Tierra, Hui Z., Konaté A.A., Youjian H., Ziggah Y.Y.Fuentes:scopusUsing an Artificial Neural Network to transformation of coordinates from PSAD56 to SIRGAS95
Conference ObjectAbstract: The technological advance allowed the improvement of existent Geodetic Reference Systems (GRS) in thPalabras claves:Artificial Neural Network - ANN, Geodetic Coordinate Transformation, Radial Basis Functions - RBF, similarity transformationAutores:Alfonso R. Tierra, de Freitas S.R.C., Guevara P.M.Fuentes:scopusUsing an artificial neural network to improve the transformation of coordinates between classical geodetic reference frames
ReviewAbstract: Advances in technology have allowed for the improvement of geodetic reference systems (GRSs). RelatiPalabras claves:artificial neural networks, Coordinates transformation, Learning, Radial basis functions reference framesAutores:Alfonso R. Tierra, Dalazoana R., de Freitas S.R.C.Fuentes:scopusVisual analysis of recurrence of time series of the coordinates ENU in the GPS stations
ArticleAbstract: The time series content information about the dynamic behavior of the system under study. This behavPalabras claves:Coordinates ENU, Embedding dimension, Recurrence, time delay, TIME SERIESAutores:Alfonso R. Tierra, Amores M., Cañizares C., Porras L., Ruben León, S. Alexis TinocoFuentes:scopusPlanes coordinates transformation between PSAD56 to SIRGAS using a Multilayer Artificial Neural Network
ArticleAbstract: Prior any satellite technology developments, the geodetic networks of a country were realized from aPalabras claves:Artificial Neural Network, Bidimensional transformations, PSAD56, SIRGASAutores:Alfonso R. Tierra, Ricardo RomeroFuentes:scopusPbkp_rediction of concentrations of PM<inf>2.5</inf> in downtown Quito using the chaos theory
Conference ObjectAbstract: Pollution with particular material called PM2.5, is made up of particles of lower or equal aerodynamPalabras claves:Autores:Alfonso R. Tierra, Arquímides X. Haro, Marco Pino-Vallejo, Nelly P. PerugachiFuentes:scopus