4 articles in this issue
Tayná Aparecida Ferreira Gouveia,Luiz Fernando Sapucci,João Francisco Galera Monico,Daniele Barroca Marra Alves
In Global Navigation Satellite Systems (GNSS), the effects of neutral atmosphere in electromagnetic signal propagation impacts directly on the quality of the final estimated position, leading to errors in the metric order. Using an atmospheric model is a ... see more
Giuliano Sant’Anna Marotta
In 2018, the Brazilian Institute of Geography and Statistics (IBGE) defined the normal height values and geopotential numbers for the High Precision Altimetric Network (HPAN), creating the need for developing procedures able to adapt works correlated with... see more
Natália Sabariego,Jorge Antonio Silva Centeno
Building roof extraction has been studied for more than thirty years and it generates models that provide important information for many applications, especially urban planning. The present work aimed to model roofs only from point clouds using genetic al... see more
Müge Albayrak,Bahattin Erdogan,Halil Erkaya
The Global Navigation Satellite System (GNSS) is used for precise positioning applications, such as surveying and geodesy. The aim of the present work is to evaluate the effectiveness of web-based relative positioning (RP) and precise point positioning (P... see more