GPS Full Form is Global Positioning System.
What is GPS?
- GPS is a global navigation satellite system that provides geolocation and time information to measure and computes its position on the earth.
- GPS is also referred to as NAVSTAR GPS (Navigation System with Time and Ranging).
- GPS receiver needs to receive data from four or more GPS satellites without any obstacles. In GPS, the user does not require to transmit any data.
- The U.S. Department of Defense developed GPS, basically designed to assist soldiers and military vehicles, but it made accessible to anyone having a GPS receiver after some decades.
- The first GPS was developed in the 1960s to assist the ships of the US Navy in navigating the oceans more accurately.
Structure of GPS
The three blocks configured the structure of GPS are as follows-
- Space segment (GPS satellites)- There are 24 GPS satellites deployed on six orbits around the earth at the altitude of approximately 20000km (four GPS satellites per one orbit) and around the earth at 12-hour-intervals.
- Control segment (Ground control stations)- It controls satellite orbit to measure the deviation of the satellites from the orbit and GPS timing.
- User segment- It refers to users that use navigation signals received from the GPS satellites to calculate position and time.
- The signal of time is received by the GPS receiver from a GPS satellite.
- The time difference between the GPS time of the clock in which the GPS receiver receives the signal will be calculated to generate the distance from the receiver to the satellite. The same process is repeated with the other three available satellites.
- The anatomic clock is incorporated in a satellite to generate on-the-spot time information, which is very précised compared to the time generated by clocks incorporated into GPS receivers.
The GPS tracking system goes inside a vehicle, phone, or special devices, either stationary or portable. The unit helps to detect the exact location and can track the live movement.
Types of GPS Tracking Systems
There exist two types of GPS tracking systems: passive and active. A passive system finds the location and stores it as data based on an internal memory card can be downloaded and analyzed. In addition to location, time, velocity, average speed, and total mileage can be monitored. An active system tracks the real-time location. This type of system works well in tracking vehicles, airplanes, etc.
Global positioning system, full form of GPS, can be applied in generally 5 major categories:
- Location – determining a position
- Navigation – showing the route from one location to another
- Timing – bringing precise timing to the world
- Mapping – creating maps of the world
- Tracking – monitoring object or personal movement
Who Uses GPS?
Some of the applications that GPS systems are currently being used worldwide include aviation, surveying, mining, marine, recreation, agriculture, and military. To make life easier, productive and safer.
Uses of GPS
- Lost persons or pets can be easily tracked through GPS by a single click, sending an alert to the caretaker or guardians.
- The SOS alarm utilizes the navigation system installed in cellphones or computers to help with notifications when any closed one presses it.
- Traveling to an unfamiliar location becomes easy as GPS acts as a guide helping you reach the location.
- GPS is used in projecting temperature levels both on the ground and that of the atmosphere
- Lower operating costs are incurred by using the GPS to find the most efficient route to reach the destination.
- GPS tracking system is also used for route optimization. Route optimization includes the number of turns, real-time traffic congestion, and the best way to reach the stop.