Satellite Tracking System - How It Works

Satellite tracking is a major component of Global Positioning System. It can be used for tracking vehicles or people. It was previously known as NAVSTAR (Navigation Satellite Timing and Ranging), which was developed for the use of military. Today the satellite tracking system is used for various commercial as well as other purposes. The global positioning system basically has three parts and works in stages. First there is a control station, then satellites and then the trans-receivers. When these three work in congruence, the objective of tracking is achieved.

Firstly a Satellite Tracking Device, which is generally a trans-receiver, needs to be installed in the object to be tracked. Although one can do without it also provided the co-ordinates of the object to be tracked are known. The ground control stations manage the transmission of the radio signals to and from the satellites. The main satellite command centers control the movement of satellites in the earth’s orbit. They ensure that the satellites are in their current orbits and move in a correct designated path.

The second most important component of the satellite tracking system is the orbiting satellite itself. Currently there are 24 satellites that are orbiting the earth. Generally satellite takes about 12 hours to complete one revolution around the earth. They send and receive the signals to the ground stations as well as to the satellite tracking device on the object pathway. The signal from the satellite also contains the precise time it was sent. The satellites are positioned in such a way that at least three of them are visible from earth and equidistant from each other.

The GPS receivers are the user segments of the overall satellite tracking system. It receives the information signals from the satellites in the form of radio wave. It calculates the time on which the signal was sent. Based on this, it forms four spheres. Wherever these two intersect a circle is formed. The GPS uses this circular intersection to determine the exact location. Amongst its various uses, the Satellite Tracking System in Africa is used to monitor the activities of tagged endangered species or to locate the tourists who may have lost their way in the jungles.

About the Author

Pieter Smits Pieter Smits is the CEO and founder of GlobalTrack. GlobalTrack is the leader in two way satellite tracking solutions. With over 10 years of experience you will be assured of the knowledge required to give you the best solution for your requirements. For more information visit: www.globaltrack.com