You may notice that you can't delete AC folder, but that's alright. 5- Restart your computer. 6- Now, were going to re-register Microsoft Edge in your account. Open the Start menu, search for Windows PowerShell, right-click it from the result, and select Run as administrator. 7- Type the following command and hit Enter : cd C:\Users\UseYourUsername.
A geodetic datum is an abstract coordinate system with a reference surface (such as sea level) that serves to provide known locations to begin surveys and create maps. In this way, datums act similar to starting points when you give someone directions.
1 The inability of the large geodetic systems, such as European Datum (ED50), North American Datum (NAD), and Tokyo Datum (TD), to provide a worldwide geo-data basis. 2  Need for global maps for navigation, aviation, and geography.n January 1966, a World Geodetic System Committee composed of representatives from the United States Army, Navy and Air Force, was charged with the responsibility of developing an improved WGS needed to satisfy mapping, charting and geodetic requirements.