Question

What are Coordinate Systems? Explain the Geographic Coordinate System in detail with a suitable diagram.

Hint:

GCS uses latitude and longitude to pinpoint locations on the Earth’s surface.

Answer 1

Coordinate Systems establish reference frameworks for pinpointing locations on Earth's surface, enabling accurate geospatial data placement, mapping, and analysis.
Two primary types exist: Geographic Coordinate Systems (GCS) and Projected Coordinate Systems (PCS).
A Geographic Coordinate System utilizes a spherical, three-dimensional model for location definition.
It relies on a datum (e.g., WGS84), an angular unit (typically degrees), and a prime meridian (e.g., Greenwich).
Locations are defined by latitude (north-south) and longitude (east-west).
GCS is standard for global datasets, GPS data, and extensive regional mapping.
A visual representation would depict the Earth with latitude lines parallel to the equator and longitude lines converging at the poles.
This system ensures exact global positioning but requires conversion to a projected system for flat map generation.