Improving Precise Point Positioning Convergence Time through TEQC Multipath Linear Combination “Assessment of the Accuracy and Convergence Period of Precise Point Positioning" “Comparison of Satellite Altimetric Gravity and Global Geopotential Models with Shipborne Gravity in the Red Sea” ): " Using Advanced Soft Computing Techniques for Local Geoid Model Estimation and Evaluation” “Determination of Zero Difference GPS Differential Code Biases for Satellites and Prominent Receiver Types”, “Assessment of the most recent satellite based digital elevation models of Egypt”. “Sea Level Change Analysis and Model Identification based on Tidal Gauge Measurements in Alexandria, Egypt”. “Seabed Surficial Sediment Classification Using Parametric Sub-Bottom Profiler”, "Time and Frequency Domains Response Analyses of April 2015 Greece’s Earthquake in the Nile Delta Based on GNSS-PPP", “Datum Maintenance of the Main Egyptian Geodetic Control Networks by Utilizing Precise Point Positioning "PPP" Technique”, “Temporal and Spatial Variation of Differential Code Biases:A case study of regional network in Egypt”, “Effect of Differential Code Biases on the GPS CORS Network: ACase Study of Egyptian Permanent GPS Network (EPGN)”, “Study the feasibility of using PPP for establishing CORS network”. “Study the Effect of Measured Heave in Single Beam Hydrographic Survey on Dredged Quantity Estimation”. “Towards a Semi Kinematic Datum for Egypt”, “Evaluating the Egyptian HARN Networks by GNSS Precise Point Positioning “PPP” " The Use of Minimum Curvature Surface Technique in Geoid Computation Processing of Egypt", "Automatic Concrete Crack Detection and Mapping of Terrestrial Laser Scan Data”, "Investigating the Impact of High Voltage Powerlines On The GPS Signal", “Using RTK tides in The Northern Coast of Egypt, Undulation Model Correction Derived from EGM2008". "Enhancing the Accuracy of the Autonomous Solution of GPS Single Frequency Receivers", “Developing a Real-Time Model to reduce The Geometric Delay Residuals in Double-Difference GPS Observations Over Long Baselines”, The simple polynomial technique to compute the orthometric height in Egypt “Present-Day Crustal Deformation Derived Around the Northern Part of Nasser Lake, Derived from GPS Measurements and Its Tectonic Implications”, “Developing a Real-Time Approach for Detecting and Repairing Cycle-Slips in Difference Mode”, APPLYING NEW APPOACHES FOR IMPROVING THE ON-THE-FLY (OTF) AMBIGUITY RESOLUTION PROCESS OVER LONG BASELINES “Present-day Geodynamic Deformation around the Cairo City, Egypt, as Derived from GPS Measurements and its Tectonic Implications”. “Final Results of Gravity Time series Observations at Helwan, Cairo , Egypt”, A proposed local dry zenith delay model for GPS Measurements in Egypt, derived from surface pressure data "Evaluation of the Crustal Deformation in the Gulf of Suez Region Using GPS Techniques", “Developing a Real Time Algorithm for Heave Determination Based on Single Frequency GPS Data”, “Can the New Developed Earth Gravitational Model 2008 Be Used as a Geoidal Model for Kuwait?", THE ELASTIC STRESS FIELD AROUND NORTHERN PART OF THE NASSER LAKE, EGYPT, DERIVED FROM GPS MEASUREMENTS “An exploratory investigation towards a real-time and near real-time crustal movement determination over medium baselines”, “Developing a New Dry Zenith Path Delay Model for Egypt”, “Local Geoid Determination Around Lake Nasser”, NRIAG Journal of Geophysics, "Accelerating the convergence period of GPS/GLONASS precise point positioning using pseudorange multipath and noise mitigation" Developing and Assessment of Epoch by Epoch Linear Model for GPS Single Point Positioning”