Geodetic Datum

A geodetic datum is a reference system used to measure the Earth's surface. It provides a framework for mapping and spatial data, defining how locations are represented on a map. Think of it like a network of points that establishes a baseline for geographical coordinates like latitude and longitude. Different datums can vary based on the region or purpose, which is why it's important to know which one is being used, especially in fields like surveying, navigation, and GPS technology. This ensures accurate positioning and consistency across various maps and geographic information systems.