SciELO - Scientific Electronic Library Online

vol.18 issue3Semiautomatic road extraction in the object-space: integrated use of a stereopair of aerial images and a DTMDesign of geodetic networks reliable against multiple outliers author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Boletim de Ciências Geodésicas

On-line version ISSN 1982-2170


AGUIAR, Claudinei Rodrigues de  and  CAMARGO, Paulo de Oliveira. Ionospheric Grid and GIVE spatial resolutions. Bol. Ciênc. Geod. [online]. 2012, vol.18, n.3, pp.464-479. ISSN 1982-2170.

The state-of-the-art of ionosphere modeling is to develop and to improve methods to provide reliable ionospheric corrections in real time to GNSS users using simple structures for data broadcast. Considering this requirement and support systems for navigation, such as SBAS (Satellite Based Augmentation Systems), efforts are made to provide information to the corrections of the ionospheric systematic error using a regular grid of points. In addition, efforts are also being directed to improve the performance of current methods used to generate ionosphere grid in equatorial regions. In this context, a pioneering work in Brazil was proposed a method for the generation of Ionospheric Grid (GI) and the level of confidence (GIVE - Grid Ionospheric Vertical Error) to improve the accuracy of GNSS positioning and navigation, as well as provide a tool can be used in the research on the ionosphere. This paper presents an analysis for setting the spatial resolution most viable for GI and GIVE, as well as the impact of the distribution of reference stations.

Keywords : Ionospheric Grid; GIVE; Spatial Resolution; GNSS.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License