GPS or as GPS full-form states Global Positioning System is a navigation system that works with the help of a satellite to provide location details. GPS technology was first used in the 1960s by the U.S. military, and after a few decades, it was available to the general public. Today, we have GPS in our cars, phones, tablets, and more. It is mostly used to track, guide, and provide the best route from one place to another. In fact, several delivery services also make use of this facility in their apps.
Parts of GPS
1. Space equipment – Known as satellites, in six orbital planes, there are 24 satellites that are set to do the job.
2. Control station – There are satellite control stations on Earth in order to manage and track them.
3. User segment – Users who make use of the system are referred to as user segments.
How Does GPS Work?
- The GPS satellites are approximately 19,300 km away from the Earth, and currently, about 24 satellites are deployed. They go around the planet at a breakneck pace with a speed of 11,200 km/h.
- Each satellite comes with an atomic clock, computer, and a radio.
- GPS uses trilateration methods to work.
What Are The Applications Of GPS?
- GPS can give you the exact location
- It can track an object or a person
- It aids the creation of world maps
- It is useful when you are traveling
How Does Technology Work?
Using a technique called trilateration, GPS is used to calculate location, elevation, and velocity. This methodology collects the signals from the satellites resulting in output location. Sometimes, trilateration is confused with triangulation, but you can go wrong there as triangulation is not used to measure distance but angles.
All the satellites that go around our planet send signals to the GPS device on Earth. The exact location can be calculated when there are signals from four satellites. Each satellite is given the task to circle the earth twice a day, and each one sends a unique signal.
What Are The Main Uses Of GPS?
History Of GPS
We humans have been using navigation for thousands of years now with the help of stars, the moon, and the sun. However, by the 20th century, we had GPS technology to help us out. In the year 1957, Russia launched their satellite, Sputnik I, which has geolocation capabilities. Then, the U.S. Department of defense started making use of the same for submarine navigation. It was by 1983 when the GPS became available to the general public.
What Are The Advantages And Disadvantages Of GPS?
- It helps you get wherever you are trying to reach without any hassles.
- It is easy to use and can be used by anyone and everyone.
- Generally, GPS technology offers 24/7 customer care.
- It is secure.
- It can be sometimes inaccurate.
- You can go round and round if you have no local knowledge.
- It can cause a distraction while you are driving if you are heading to a completely new location.
- If the battery or signal is lost, you won’t be able to use the GPS technology.