The manufacture of any product is indispensable for the support of the original technology, especially in the era with advanced technology, most of our products make full use of the innovative technology. For example, GPS TRACKER is a product based on GPS. Without the invention of GPS, GPS tracker can't work.
As a GPS tracking device manufacturer, it is necessary to learn more about GPS.
It is essential to understand the working Principle of the GPS, which will help us better know the application of GPS products.
In this article, we mainly explain the Principle of the GPS. If you are interested in this topic, this may be a useful reference for you.
What is GPS?
GPS is the abbreviation of Global Positioning System, which is a satellite navigation system, which is about 20,000km away from the Earth. It can provide us with location and time information. It can work 24 hours a day under any conditions.
A complete GPS requires at least 24 satellites. As technology develop, more than 33 satellites work together in the system of GPS
Now we can use GPS in the navigation of airplanes, cars and trucks,GPS tracker that is a terminal device based on GPS positioning technology.
The US Department of Defense (USDOD) initially only put these satellites into orbit for military use, such as controlling missile launches, until the 1980s, they were made available for civilian use. Since then,we can see that various applications of GPS appeared in our vision,for example GPS tracker, navigator.
Now anyone with a GPS device, be it a SatNav, mobile phone or handheld GPS unit, can receive the radio signals that the satellites broadcast, which greatly facilitates our lives.
What is the working Principle of the GPS?
The system of GPS consists of three main parts, including the GPS satellites, the control system, and the control system.
The satellites have covered virtually every corner of the earth.No matter where you are,at least four GPS satellites can be visible at any time.
Everyone regularly transmits information about their location and real-time. These signals that are traveling at the speed of light are intercepted by the GPS receiver, and the GPS receiver calculates the distance of each satellite from us based on the length of time the information arrives.
What a GPS receiver does is locate the four or more satellites and calculate the distance between each one of them. Using this information the GPS tracking system in our car or other devices finds out its current location. The information is presented as maps, latitude And longitude specification, etc.
Once you have information about the distance between you and the three satellites, the GPS receiver can use a method called trilateration to determine your position. It is easy to understand this for the people who have learned math.
From this, we can know that the more satellites above the horizon, the more accurately your GPS device will determine your location. This is the reason why many countries need to deploy many satellites for their map.
What are the disadvantages of GPS?
GPS satellite signals are too weak when compared to phone signals, so it doesn’t work as well indoors, underwater, under trees, etc.
The highest accuracy requires line-of-sight from the receiver to the satellite, this is why GPS doesn’t work very well in an urban environment.
now we can solve this problem very well , we can install the GPS receiver where the GPS signal is weak.
There are several different models and types of GPS receivers. GPS trackers are also a kind of GPS receivers.
The working principle of GPS seems to be very simple, but it involves a lot of technology, more details can be seen: https://www.mouser.be/pdfdocs/GPS_facts_principles_of_GPS.pdf