Comparison of the quadratic equations of best fit for total station and GPS

الملخص EN

The adjustment of observation is an important applications in the remote sensing and the geodesy.

for this purpose , nineteen control ground points at the University of Baghdad, navigated by Garmine GPS navigator (UTM projection, WGS-84 Datum) has accuracy about (15-100) m and measured by the Total Station Leica 1200.

The configuration of set data or these control ground points were a full curve in the real world.

In this paper, the none liner Least-Squares Estimation Method (NLLSEM) has been used to estimate parameters of the quadratic function and to test configuration of the points .

The quadratic function for total station and GPS, have been compared and many mathematical processes have been written by MATLAB language.

The quadratic function of best fit for total station : y(x)=-0.38*x2+3.4e + 005*x-7.4e+010 with accuracy 3.7422e+019 m2 but for GPS : y(x) = -0.24*x2 +2.1e + 005*x-4.7e + 010 with accuracy 1.0336e + 019 m2.