The NAVSTAR GPS has been applied is several fields, the coastal environment being one of them. The geodetic surveys can be used to study the positional variation that happens in dynamic coastal systems. This paper has the main objective of evaluating the accuracy of GPS kinematics positional methods in a specific sedimentary area located in Mel Island, District of Paranaguá, Paraná State, Brazil. The experiments were undertaken with the geodetic positioning methods as follow: Absolute Kinematic, Relative Kinematic, Differential (RTK and DGPS). A rover station composed by two GPS receivers was built for simultaneously collect the data thereby the proposed methods could be analyzed in a single geodetic survey. The best results found in this study was from the RTK solution, presenting the lowest values for the Root Mean Square (RMS) equals 0.003 m, 0.007 m and 0.149 m for the north component (N), east component (E) and geometrical height (h), respectively. Finally, recommendations for the applicability of the methods used for costal area are presented.
Geodesic Positioning; Absolute Kinematic Method; Relative Kinematic Method; RTK; DGPS
