GIS & REMOTE SENSING
GNSS (Global Navigation Satellite System) is a general term describing any Satellite constellation that provides positioning, navigation, and timing services on a global or regional basis.
In below list of GNSS Tutorials.
GPS Survey: Equipment GPS is a vital part of surveying and mapping activities around the world. It was one of the first to take advantage, because it dramatically increased productivity and resulted in more accurate and reliable data. GPS supports the accurate mapping and modeling of the physical world — from mountains and rivers to […]
What is Ground Control Point? The Ground Control Points (GCPs) are defined as points on the surface of the earth of a known location used to Georeference data. The GCPs are specific pixels in an image for which the output map coordinates are known. GCP consists of two X,Y pairs of coordinates: GCPs are identifiable
Overview of Garmin eTrex GPS Garmin eTrex retains the core functionality, rugged construction, affordability and long battery life for the most dependable GPS device available. The Garmin improved the user interface and added a worldwide Basemap, paperless geocaching and support for spine-mounting accessories. The Garmin eTrex is a well-known series of handheld GPS devices designed
Buy Best Garmin GPS The Global Positioning System (GPS) is a satellite-based navigation system made up of at least 24 satellites. GPS works in any weather conditions, anywhere in the world, 24 hours/day. List of the Best Garmin GPS to Buy in 2025 1. Garmin Foretrex 701 Foretrex 701 Specification General Physical dimensions 7.3 x
SONAR- Sound Navigation and Ranging Introduction Sound Navigation And Ranging (SONAR) is exploring and mapping the ocean, because sound waves travel farther in the water than do Radar and light waves. The Sonar is a technique that uses sound propagation to navigate, measure ranging, communicate with or detect objects on or under the surface of