Utility of GPS for forest resource inventory : Evaluation of differential GPS positioning accuracy

The Accuracy of Gps Relative Positioning

Quality Control for Differential Kinematic GPS Positioning

Kinematic differential GPS positioning is used to achieve accurate, real-time positions and velocities of a moving platform on land, in the air and at sea. In a dynamic environment, however, the deviations or biases from the assumed system and observation models are often significant. This results in a degradation of the accuracy and reliability of the estimated positions and velocities. Theref...

Increasing Accuracy of Combined GPS and GLONASS Positioning using Fuzzy Kalman Filter

In this paper, combined GPS and GLONASS positioning systems are discussed and some solutions have been proposed to improve the accuracy of navigation. Global Satellite Navigation System (GNSS) is able to provide position, velocity and time with respect to coordinated universal time. GNSS positioning is based on received satellite signals, so its performance is highly dependent on the quality of...

Improvement in Differential GPS Accuracy using Kalman Filter

Global Positioning System (GPS) is proven to be an accurate positioning sensor. However, there are several sources of errors such as ionosphere and troposphere effects, satellite time errors, errors of orbit data, receivers errors, and errors resulting from multi-path effect which reduce the accuracy of low-cost GPS receivers. These sources of errors also limit the use of single-frequency GPS r...

tropospheric error modeling for gps positioning

in this paper a practical method for tropospheric effects on gps derived coordinates in absolute mode is presented. gps observations at the permanent gps stations can be used as source of information for the modeling. the developed model is a time-dependent model and as such differs from usual tropospheric models, which are based on atmospheric parameters, i.e. temperature, pressure and humidit...