Evaluation of Some Recent High Degree Geopotential Harmonic Modelsin Egypt A Better Match Of The EGM96 Harmonic Model For The Egyptian Territory Using Collocation Evaluation and Spectral Analysis of a Locally Refined EGM96 “EGM96EGR” Harmonic Model The “EGM96EGIT” Geopotential Model Tailored to Egypt by the Stokes Integral Technique A Digital Elevation Model for Egypt by Collocation Two Techniques Of Tailoring A Global Harmonic Model: Operational Versus Model Approach Applied To The Egyptian Territory AN UP TO DATE PRECICE 5'x5' GEOID GRID F0R EGYPT BY COLLOCATION TECHNIQUE THE USE OF SIMPLE MONITORING SYSTEMS IN LUXOR TEMPLE BEFORE AND DURING DISMANTLING, DEWATERING AND ERECTION MONITORING THE COPTIC AREA BY MANUAL, AUTOMATIC AND MOTORIZED TOTAL STATION SYSTEMS A PRECISE GEOIDAL MAP OF THE SOUTHERN PART OF EGYPT, BYCOLLOCATION TOSHKA GEOID USING SUPERVISED CLASSIFICATION TECHNIQUES FOR PRODUCING RECENT SOIL MAP FOR NORTHERN SINAI PENINSULA FROM LANDSAT TM-5 DATA A PROTOTYPE TWO DIMENTIONAL TRACKING NAVIGATION SYSTEM BASED ON DEAD RECKONING TOOLS Improving Accuracy and Increasing Resolution of the World and Local DEMs through Data fusion Accuracy Assessment of world DEMs versus Local DEM in Egypt Estimating the Cartesian Rotation Vector of Nubian Plate-ITRF08 by Using the Egyptian GPS Permanent Network Fetching the Most Appropriate Global Geopotential Model for Egypt INFLUENCE OF LOCAL VERSUS GLOBAL IONOSPHERIC MODEL ON PRECISE GPS POSITIONING Using Radiances Of High Spatial Satellite Images To Estimate The Nautical Charts For The River Nile Utilization High Spatial Satellite Images Reflectance’s to Estimate the Nautical Charts for the Nile River