Coordinate Transformation from ENU (East-North-Up) to ECEF (Earth-Centered Earth-Fixed) System

This project implements coordinate transformation from the ENU (East-North-Up) local coordinate system to the ECEF (Earth-Centered Earth-Fixed) global coordinate system. The core implementation consists of a MATLAB function named ENVtoECEF that accepts ENU origin latitude/longitude coordinates and ENU point coordinates as input parameters, returning corresponding latitude, longitude, and altitude (LLA) coordinates. The transformation involves sophisticated geodetic calculations including Earth's ellipsoid radius computations and geoid modeling using WGS-84 parameters. The algorithm follows a multi-step approach: first converting the ENU origin to ECEF coordinates, then applying rotation matrices to transform ENU points relative to this origin, and finally converting the resulting ECEF coordinates back to geodetic coordinates. Detailed documentation accompanies the code, providing comprehensive mathematical formulas, algorithm explanations, and implementation notes. This project holds significant value for geographic information systems (GIS) and navigation technology research, serving as a valuable reference for future scientific investigations in geospatial computing and coordinate system transformations.