DETERMINATION OF COMPONENTS OF THE DEFLECTION OF THE VERTICAL OF LOBI AREA MAKURDI BENUE STATE NIGERIA USING GPS (GNSS) AND PRECISE LEVELLING OBSERVATIONS. M 033

Author: Ameh Benjamin Mgbede
Department: Surveying and Geoinformatics
Affiliation: Nnamdi Azikiwe University Awka

The subject under consideration is a research work on the determination of components of the deflection of the vertical of Lobi area in Makurdi, Benue State using Geometric Method. The Geometric method of determining components of the deflection of the vertical involves the practical integration of Global Positioning System (GPS) GNSS observations and Precise leveling techniques. The results of the observations were used to compute the components of vertical deflection using the Least Squares adjustments. Using the method described, the deflections of the vertical components of the test point were determined. The estimated parameters are -3.18 ±0.60 and -2.25±0.43 arc seconds for the north-south and east-west components; respectively. The deflection of the vertical components at the same station was calculated using the EGM96 and EGM2008 spherical harmonic models. The associated standard errors of the processed vectors of the network were computed. The results obtained in magnitude are significant findings, demonstrating the ability of the method to resolve the deflection of the vertical components from GPS and precise leveling observations in local areas.

For full copy of this document please visit the digital library help desk.

Tags: , , , , ,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: