Combining geodetic solutions: case study of GNSS-SP network

Abstract

The Brazilian continental characteristic implies the need for scientific challenges in spatial research and technology in geodetic solutions, contributing with the development and engagement of national and international research centers, thus providing instruments to space activities in this country and enhancing the prospects applications of sciences and spatial geodetic techniques (GNSS, SLR, VLBI, and DORIS) in several sectors of society, as well as understanding and integrating of space activities developed in an international context. Given the deficiencies obtained by individual geodetic solutions (intra-techniques), regarding the origin, scale, or orientation, it's necessary to combine results obtained with different spatial techniques (inter-techniques) in SINEX format, with a view to minimize or eliminate such deficiencies. In Brazil, the stations of GNSS-SP Network collect and provides GNSS data, which can be processed, together, with SINEX files, aiming at resolving the deficiency of datum in the processing that uses only individual solutions. Because of the scarcity of this kind of study in Brazil, this research cooperates with the investigation and determination of GNSS-SP Network stations coordinates by combining inter-techniques solutions, contributing to the future scientific challenges and with the geodetic national community, providing more consistent solutions.(AU)