Framework for the establishment of a nationwide network of global navigation satellite system (GNSS) : a cost effective tool for land development in Ghana
Poku-Gyamfi, Yaw & Gunter W. Hein
Until now most surveyors in Ghana like in other developing countries have been underutilizing GNSS not only because of the perceived high cost and complexity of the GNSS equipment and its infrastructure but are also skeptical about the accuracies of their output. This perception continues to widen the gap between the developed and the developing countries as far as effective land utilization and management are concerned. To remove this perception, methods like differential corrections, area corrections and others should be employed. This requires the development of some basic GNSS infrastructure which can reduce the distance dependent errors. The establishment of a nationwide Network of GNSS Reference Stations has therefore been outlined where any user will be at most 100km from an active reference station and the establishment of passive stations as controls. This paper highlights the need to adopt the use of the geocentric ITRF reference system as a national reference system instead of the previous datum established through classical geodesy. The need to re-establish an IGS station in Ghana and the modelling of a national Geoid have been discussed and details explained. The equipment need, data handling and distribution and monument building has also been given.
Event: 5th FIG Regional Conference for Africa : Promoting Land Administration and Good Governance
Only personal, non-commercial use of this document is allowed.