Interpolation Of Spot Heights In Seloum Dry Port

Abstract

Leveling is a branch of surveying and one of its targets to find out the topography of earth surface, more over it is required in the setting out of all kinds of engineering works. Creation of Dry ports are to help costal ports and they need to be interconnecting by road and rail infrastructure.

Planning and design of Dry ports as large area are looks like container ports at system and aspects. Apprehensible of interpolation deals with knowing or telling what is going to happen, often but always, based upon experience or knowledge.

Explaining of some mathematical techniques (Inverse Weighting Distance and Polynomial) is for purpose of this research, besides explaining of Kriging method as one of the Geographical Information System (ArcGIS technique).

The main objective of this thesis is to interpolate spot heights of large area by using mathematical equation as geodesy technique and GIS and compare the results (contour maps) versus contour map created from the data observed from site with dual frequency GPS. Interpolated data evaluated by Root Mean Square Error as statistical method. The method used in this thesis proved the possibility prediction of spot heights in large area using mathematical techniques to interpolate from few points.

The result had shown good and converge interpolation using polynomial rank one and kriging from ArcGIS