Which system is primarily used to locate position, map, and survey terrain?

• A. GPS
• B. GIS
• C. Lathe
• D. Water Jet

Answer: (A)

Locating position, mapping, and surveying terrain rely on a satellite-based system that provides precise geographic coordinates. This system is GPS. A receiver on the ground uses signals from multiple satellites to calculate its exact position by measuring how long the signals take to reach the receiver, effectively solving for latitude, longitude, and altitude. This capability makes GPS the primary tool for field positioning, map creation, and surveying data collection. In practical terms, farmers and land managers use GPS to mark field boundaries, navigate fields, and set out features for planting or irrigation, with that location data often fed into GIS for analysis. The other options aren’t built for real-time positioning: a lathe and a water jet are manufacturing tools, not navigation or surveying systems; a GIS handles spatial data and analysis, but it relies on GPS data to determine actual positions in the field.