GPRS is limited in range and is available only on land. Cost Expensive Economic. GPS network uses satellites to determine the accurate position of an object on the earth.
GPS network is made up of a constellation of 24 operational satellites and some extra for backup purpose. These satellites orbiting the earth at over 20, kilometers altitude and each take 11 hours and 58 minutes.
In GPS the satellites are arranged in such a way that from almost anywhere on the surface of earth receiver should have a direct line of sight of at least four satellites. This is vital because GPS point positioning requires at least four satellites to calculate three position coordinates and the clock deviation, this process is known as trilateration. Sometimes trilateration process fails, when GPS navigator receives inadequate information, this takes place due to ionosphere and troposphere which retard the signals speed.
In that situation, GPS system notifies the user about the failure instead of sending the incorrect information. As GPS units are receivers, such as mobile phone which are capable of sending and receiving signals.
Each GPS satellite broadcasts a navigational message towards the earth which contains an extremely accurate timestamp obtained through atomic clocks available in satellites.
The satellites also broadcast their position at the time of broadcast, with all GPS signals broadcasting at 1. You can also watch real time News, download games and watch movies. How does GPRS work? You must be aware of how files are transferred from one location to another on your computer. They are broken down into Packets and sent across. Similarly GPRS also uses the same function to transfer data through a network. The information is split into smaller units or Packets and sent through the network and is reassembled at the receiving end.
GPRS provides a high-speed data transfer, typically between 56 Kbits per second to Kbits per second. A user of the GPRS network is charged only on the amount of data is sent or received as opposed to the duration of the connection. Now that you have a good understanding of both the technologies, let us summarise the difference: GPS. A positioning service that can determine any position on the Earth Receives signals from Satellites Can be used on both land and sea, in any part of the globe.
A data service technology that provides wireless communication Receives signals from cellular towers Range is limited to land. Portable monitors are an excellent way to improve your home office settings.
They give you an additional screen to multitask Remember Me. Home How to Tech Tips. October 24, In short GPS is made up of three distinct parts: 24 satellites orbiting the Earth twice a day. Related Posts.
HSCSD was based on conventional circuit-switched technology and was not efficient enough for offering data services. On the other hand, GPRS is based on packet-switched technology , where charging is not based on connection duration but the amount of transmitted data. GPRS networks still exist today and can offer peak data rates of up to At the time of writing , around the world, the primary cellular technology is 4G LTE , which can offer a lot higher data rates on average. GPS stands for Global Position System, and it uses a network of satellites to help calculate our location anywhere in the world.
The cost of the GPS receivers has come down significantly, which has made the technology more affordable and accessible to the vast majority of people. The US military initially introduced GPS in , and it is a constellation of satellites that can provide two-dimensional and three-dimensional locations worldwide. A constellation of 18 satellites is needed to give a 2-D location, i. Satellites transmit timing signals and their orbital parameters, which helps receivers calculate the distance between the receiver and the satellite based on the time it takes to receive the transmitted signal.
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