The coordinates of a location obtained from a Global Positioning System (GPS) receiver depend on the type of environments. This paper discusses the errors in GPS coordinate conversion from the World Geodetic System 84 (WGS84) to the Universal Transverse Mercator (UTM) system, in different environments and their reduction using Kalman filter. 30 samples of positional coordinates, each for three ...

A common problem faced by most countries is the estimation of precise transformation parameters between their national geodetic datum, and the World Geodetic System 1984 (WGS84) global datum, used by the Global Positioning System (GPS). There can be considerable difference in positions of the local ellipsoidal datum and the global datum, sometimes up to several hundred meters. So a country like...

The WGS84 ellipsoid is tessellated using quadrilaterals of roughly the same size. The tessellation scheme is developed for the purpose of storing, distributing and analysing global as well as local digital terrain models. Compared with DTED, the new grid has a more uniform distribution of cell sizes. This equal area property of the tiles of the grid is an attractive characteristic in geostatist...

Egypt has recentely established a new precise geodetic framework based on the global WGS84 datum to furnish a national GPS-based reference system. For agricultural development along the Nile valley, the National Agricultural Cadastral Network (NACN) has been established with a precision of 1 part per million. However, the orthometric heights of the 112-station network have been computed utilizi...

In this paper the authors present an approach for the semantic annotation of RESTful services in the geospatial domain. Their approach automates some stages of the annotation process, by using a combination ofresources and services: a cross-domain knowledge base like DBpedia, two domain ontologies like GeoNames and the WGS84 vocabulary, and suggestion and synonym services. The authors' approach...

Many obsolete coordinate systems used in the past have fallen into disuse. However, the contents of historical documents still refer to these obsolete coordinates and thus translation systems are important in locating historical events. We present a specialized Linked Open Data API constructed to translate obsolete British Trench Map coordinates from the Great War into modern WGS84 coordinates....

Efficient transformation parameters are key to effective geodetic operations between any systems. With the advancement in technology, an improved interaction reference frames has been noticed irrespective of their inherent heterogeneous deformations and intermittently present oversight that exist as a result conversion methodology. The spatial data captured using Global Navigation Satellite Sys...

In this study, a sexaxial figure of the Earth was created using randomly distributed 6400 control points on geoid, which generated by EGM2008 gravity model. The shape ellipsoid is defined its six orthogonal axes. To construct new geometric figure, eight triaxial ellipsoids were fitted to Cartesian coordinates in each octant geoid least squares method. Its origin constrained coincide with centre...