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Dr. Ashraf abdelmoniem mohamed ghoniem :: Publications:

A New Approach for Determining the Geoditic Latitude from Isometrics Latitude
Authors: Ashraf A M Ghoneim , Khaled M Z Hassan, Said A ShebL
Year: 2007
Keywords: Not Available
Journal: Engineering research jornal faculty of engeneering EL AZHA
Volume: 28
Issue: Not Available
Pages: no 3
Publisher: EL AZHAR University
Local/International: Local
Paper Link: Not Available
Full paper Not Available
Supplementary materials Not Available

A solution for the problem of determining the Geodetic Latitude on the ellipsoidal earth, in terms of the Map (Isometric) or Mercator Latitude is presented in this research. The proposed model relies mainly on the spherical case by contributing a residue function which anticipates the disparity between spherical and ellipsoidal cases. The residue function is proposed as 8th degree polynomial equation whose independent variable is the Map Isometric Latitude. The coefficients of this function are constants derived from the values of earth’s size via the adaptation of the Least Squares approach applied along the entire earth’s meridian (i.e. < ). The output formula is uncomplicated and easy applicable with fair accuracy of value degree at latitude near the pole (φ =89°) if the WGS84 model is considered. This accuracy may be increased by increasing the power of the polynomial function. The major benefits of the formula are the allowance of the opportunity for the geodetic analytical analysis conduction and the validity of the formula for all values of the Geodetic Latitude

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