10 articles in this issue
Camile Sothe,Veraldo Liesenberg,Cláudia Maria de Almeida,Marcos Benedito Schimalski
A classificação remota dos diferentes estádios sucessionais da vegetação ainda constitui um desafio devido à similaridade espectral destas classes. Este artigo tem o objetivo de avaliar o desempenho de imagens Landsat-8 e RapidEye para a classificação do ... see more
Alex da Silva Santos,Nilcilene das Graças Medeiros,Gérson Rodrigues dos Santos,Jugurta Lisboa Filho
In the area of Geosciences it is intuitive to think of spatial correlation as a phenomenon under study, and Geostatistics has tools to identify and represent the behavior of such dependency. The spatial analysis of the results of an inspection of the qual... see more
Laís Thie Hasuda Nakao,Cláudia Pereira Krueger
O método de posicionamento a ser empregado em um levantamento batimétrico algumas vezes é questionado, quanto a sua precisão horizontal e vertical. De forma geral, tem sido utilizado nesses levantamentos o posicionamento da embarcação por meio do GPS Dife... see more
Ioannis D. Doukas,Dimitrios Ampatzidis,Vassileios Kampouris
Many of the old geodetic reference frames which realized in the previous decades using classical observations carry biases. These biases are mainly caused due to the problematic observations and/or the tectonic motion. That is the case of the official Gre... see more
Marcelo Antonio Nero,Jorge Pimentel Cintra,Gilberlan de Freitas Ferreira,Túllio Áullus Jó Pereira,Thaísa Santos Faria
In many countries, the positional accuracy control by points in Cartography or Spatial data corresponds to the comparison between sets of coordinates of well-defined points in relation to the same set of points from a more accurate source. Usually, each c... see more
Ismael Canabarro Barbosa,Edemar Appel Neto,Enio Júnior Seidel,Marcelo Silva de Oliveira
In Geostatistics, the use of measurement to describe the spatial dependence of the attribute is of great importance, but only some models (which have second-order stationarity) are considered with such measurement. Thus, this paper aims to propose measure... see more
Gustavo Dias Ramos,Claudia Robbi Sluter
In this paper, we present some results of research work that seeks to determine how the characteristics of geoinformation should be considered and included in the design of users' interfaces for a geoinformation system. Through well-known techniques of re... see more
Italo Oliveira Ferreira,Dalto Domingos Rodrigues,Gérson Rodrigues dos Santos,Lidiane Maria Ferraz Rosa
The representation of the submerged relief is very importance in diverse areas of knowledge such as Projects to build or reassess port dimensions, installation of moles, ducts, marinas, bridges, tunnels, mineral prospecting, waterways, dredging, silting c... see more
Niarkios Luiz Santos de Salles Graça Graça,Edson A. Mitishita,José E. Gonçalves
For a long time, in many countries, questions involving disputes about land ownership has generated demand for geoinformation and documentation. In most cases, access for researchers is restricted or humanely impossible by eminence of conflicts, even arme... see more
Giuliano Sant’Anna Marotta,Roberta Mary Vidotti
There are several techniques for determining geoid heights using ground gravity data, the geopotential models, the astro-geodetic components or a combination of them. Among the techniques used, the Remove-Compute-Restore (RCR) technique has been widely ap... see more