• GPSeq software for fast GPS ambiguities resolution on short baselines using kinematic relative positioning 

  Machado, Wagner Carrupt ; Monico, João Francisco Galera (Pesquisas em Geociencias, 2002) [Artigo]

  Centimeter level GPS positioning is based on the very precise carrier beat phase measurements. However, this observable is ambiguous by a number of whole cycles between the satellite and receiver antenna at the first epoch ...

• GPS positioning in the Brazilian region during intense magnetic storm of the October, 29 2003 

  Matsuoka, Marcelo Tomio; Camargo, PAULO DE OLIVEIRA ; Batista, Inez Staciarini (Pesquisas em Geociencias, 2008) [Artigo]

  The error due to the ionosphere in the GPS observables depends on the Total Electron Content (TEC) in the ionospheric layer. The TEC varies regularly in time and space in relation to the sunspot number, the season, the ...

• An alternative to derive ionospheric and tropospheric SSR corrections for PPP-RTK using adaptive constraints 

  de Oliveira, Paulo Sergio; Morel, Laurent; Galera Monico, João Francisco; Durand, Stéphane; Durand, Frédéric; Bezerra, Lucas dos Santos (Survey Review, 2023) [Artigo]

  PPP-RTK (Precise Point Positioning–Real Time Kinematic) is a positioning method by GNSS (Global Navigation Satellite Systems), based on the SSR (State Space Representation) concept. One challenge for the fast convergence ...

• The urban climate of subtropical Atlantic costal cities: The conurbation of Florianopolis 

  Mendonça, Magaly; Lombardo, Magda A. (Revista de Geografia Norte Grande, 2009) [Artigo]

  This work demonstrates the simultaneous influence of geoecological and urban factors on the variation of temperature and other climatic elements of the Florianópolis conurbation. Data was obtained in various places, following ...

• Road extraction from low-cost GNSS-device dense trajectories 

  de Moura Morceli, Bruno ; Porfírio Dal Poz, Aluir (Journal of Location Based Services, 2023) [Artigo]

  This paper proposes a method for road centerline extraction from dense Global Navigation Satellite System (GNSS) trajectories, collected by using low-cost GNSS-devices, i.e. smartphones. The proposed method basically ...

• Tree Species Classification in a Complex Brazilian Tropical Forest Using Hyperspectral and LiDAR Data 

  Pereira Martins-Neto, Rorai ; Garcia Tommaselli, Antonio Maria ; Imai, Nilton Nobuhiro ; Honkavaara, Eija; Miltiadou, Milto; Saito Moriya, Erika Akemi ; David, Hassan Camil (Forests, 2023) [Artigo]

  This study experiments with different combinations of UAV hyperspectral data and LiDAR metrics for classifying eight tree species found in a Brazilian Atlantic Forest remnant, the most degraded Brazilian biome with high ...

• Plasma bubble imaging by single-frequency GNSS measurements 

  Christovam, Ana L. ; Prol, Fabricio S.; Hernández-Pajares, Manuel; Camargo, Paulo O. (GPS Solutions, 2023) [Artigo]

  Our investigation aims to answer if it is possible to detect plasma bubbles using single-frequency measurements of the Global Navigation Satellite System (GNSS). In this regard, we show a methodology based on a regional ...

• Using Geospatial Information to Map Yield Gain from the Use of Azospirillum brasilense in Furrow 

  Martins, George Deroco; Xavier, Laura Cristina Moura; de Oliveira, Guilherme Pereira; de Lourdes Bueno Trindade Gallo, Maria ; de Abreu Júnior, Carlos Alberto Matias; Vieira, Bruno Sérgio; Marques, Douglas José; da Silva, Filipe Vieira (Agronomy, 2023) [Artigo]

  The application of biological products in agricultural crops has become increasingly prominent. The growth-promoting bacterium Azospirillum brasilense has been used as an alternative to promote greater yield in maize crops. ...

• A spatiotemporal classification approach to evaluate the impacts of land use and land cover changes before and after the Três Irmãos reservoir formation in the Tietê River, Brazil 

  Lucchetta, Beatriz Cirino ; Watanabe, Fernanda Sayuri Yoshino ; do Carmo, Nariane Marselhe Ribeiro Bernardo (Modeling Earth Systems and Environment, 2023) [Artigo]

  Land use and land cover (LULC) maps are relevant tools to recognize deep changes in the natural landscape and direct strategies to minimize environmental impacts, being an important apparatus to obtain useful information ...

• Pontos de Referência para Navegação por Motoristas com Deficiência na Visão de Cores 

  Pugliesi, Edmur Azevedo ; Moretti, Aline ; Marques Ramos, Ana Paula; Tachibana, Vilma Mayumi (Revista Brasileira de Cartografia, 2019) [Artigo]

  The objective of this study is to identify potential landmarks for in-car navigation, considering drivers who present Color Vision Deficiency - CVD. In-Car Navigation Systems (RGNS) display traffic light and bridge over ...

• Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products 

  Jerez, Gabriel O. ; Hernández-Pajares, Manuel; Goss, Andreas; Prol, Fabricio S.; Alves, Daniele B. M. ; Monico, João F. G. ; Schmidt, Michael (Space Weather, 2023) [Artigo]

  Vertical total electron content (VTEC) has great importance in describing the ionosphere. VTEC values are commonly distributed in regular grids by means of so-called global ionospheric maps (GIMs) and regional ionospheric ...

• A Retrospective of Global Navigation Satellite System Ionospheric Irregularities Monitoring Networks in Brazil 

  de Paula, Eurico Rodrigues; Monico, João Francisco Galera ; Tsuchiya, Ítalo Hirokazu ; Valladares, Cesar Enrique; Costa, Sônia Maria Alves; Marini-Pereira, Leonardo; Vani, Bruno César; Moraes, Alison de Oliveira (Journal of Aerospace Technology and Management, 2023) [Resenha]

  The use of Global Navigation Satellite System (GNSS) for air and terrestrial navigation and for many applications is increasing in the last decades. However, the Earth’s ionosphere causes GNSS signal delay due to the total ...

• GNSS Radio Occultation: a Review of the Theory, Missions, and Products 

  Jerez, Gabriel Oliveira ; Alves, Daniele Barroca Marra ; Nespolo, Raphael Silva ; Monico, João Francisco Galera ; Hernández-Pajares, Manuel (Revista Brasileira de Cartografia, 2022) [Artigo]

  Radio occultation (RO) have been used for probing the atmosphere of other planets since the 1960s. With the development of Global Navigation Satellite System (GNSS) and missions with Low Earth Orbit (LEO) satellites emerged ...

• Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers 

  Li, Chendong; Hancock, Craig M.; Vadakke Veettil, Sreeja; Zhao, Dongsheng; Galera Monico, João F. ; Hamm, Nicholas A. S. (GPS Solutions, 2022) [Artigo]

  Ionospheric scintillation is an important phenomenon affecting GNSS positioning accuracy. Scintillation parameters, S4 and σφ, are usually used to characterize scintillation in amplitude and phase, respectively. S4 and σφ ...

• Automatic Building Boundary Extraction from Airborne LiDAR Data 

  Carrilho, André Caceres ; dos Santos, Renato César ; Pessoa, Guilherme Gomes ; Galo, Mauricio (Revista Brasileira de Cartografia, 2019) [Artigo]

  This paper aims to evaluate the quality of the automatic extraction of building contours from airborne LiDAR data in order to verify if the errors obtained in the building roof areas are compatible with the criteria ...

• Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products 

  Jerez, Gabriel O. ; Hernandez-Pajares, Manuel; Goss, Andreas; Prol, Fabricio S.; Alves, Daniele B. M. ; Monico, Joao F. G. ; Schmidt, Michael (Space Weather-the International Journal Of Research And Applications, 2023) [Artigo]

  Vertical total electron content (VTEC) has great importance in describing the ionosphere. VTEC values are commonly distributed in regular grids by means of so-called global ionospheric maps (GIMs) and regional ionospheric ...

• Assessment of GPS positioning performance using different signals in the context of ionospheric scintillation: a month-long case study on Sao Jose dos Campos, Brazil 

  Christovam de Souza, Ana Lucia ; Jerez, Gabriel Oliveira ; Camargo, Paulo de Oliveira ; Marra Alves, Daniele Barroca (Boletim De Ciencias Geodesicas, 2022) [Artigo]

  The ionospheric scintillation associated to small-scale irregularities in the ionospheric layer can lead to performance degradation of Global Navigation Satellite Systems (GNSS) signals, and the reduction of positioning ...

• Weighted Iterative CD-Spline for Mitigating Occlusion Effects on Building Boundary Regularization Using Airborne LiDAR Data 

  Dos Santos, Renato César ; Habib, Ayman F.; Galo, Mauricio (Sensors (Basel, Switzerland), 2022) [Artigo]

  Building occlusions usually decreases the accuracy of boundary regularization. Thus, it is essential that modeling methods address this problem, aiming to minimize its effects. In this context, we propose a weighted iterative ...

• Comparative Evaluation of a Newly Developed Trunk-Based Tree Detection/Localization Strategy on Leaf-Off LiDAR Point Clouds with Varying Characteristics 

  Zhou, Tian; dos Santos, Renato César ; Liu, Jidong; Lin, Yi-Chun; Fei, William Changhao; Fei, Songlin; Habib, Ayman (Remote Sensing, 2022) [Artigo]

  LiDAR data acquired by various platforms provide unprecedented data for forest inventory and management. Among its applications, individual tree detection and segmentation are critical and prerequisite steps for deriving ...

• GBAS: Fundamentals and availability analysis according to σvig 

  Silva, Weverton Da Costa ; Monico, João Francisco Galera (Journal of Geodetic Science, 2022) [Resenha]

  Ground-based augmentation system (GBAS) was developed to guide aircraft precision approach and landing, aiming to replace the instrument landing system (ILS), which is currently used in most airports worldwide. GBAS based ...

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